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вторник, 19 июня 2012 г.

A Justification for Excellent Marks


Being a fifth year student these days I am experiencing my tenth set of exams in university (oh, that's an anniversary!) As some students do I become tired and nervous when a semester draws to a close and consequently to exams - this particular semester is not an exception of any kind. These feelings usually are not caused by intensive studying during the term - instead these tend to be produced by insufficient studying. Moreover the lack of confidence is intensified by the simple fact that your knowledge and skills are to be condensed into a set of raw numbers or other symbols - your marks. 

I suppose that such state of affairs feels familiar to many students and I believe that some of them have faced an idea that the marks are frequently irrelevant as well. Saying 'irrelevant' I mean that marks do not reflect the level of student's knowledge and skills - the notion is evident considering the fact that generally it is too difficult to accurately assess the person's skills as well as knowledge by the means of a single examination and, besides that, such an assessment - even if it is accurate enough - can be much harder to map to the domain of numbers or symbols like A and D - the appearence of marks doesn't matter. This idea looks as obvious as safe, although some of it's derivatives turn out to be dangerous - it is very easy to decide not to perform any active preparation for exams if one believes that marks don't bear any meaning. Really, what can make you fight for treasures if you know these cost hardly anything?

Another problem that I see discouraging students from active studying in the end of a semester is seeming futility of some courses. It strikes hardly in most Russian universities where curriculum is fixed - that is the speciality you choose when enrolling or after the first year of study determines to the extent of 90% the set of courses which you will study. Such a system somehow simplifies student's life, but it also has significant drawbacks  - one of these is the possible and rather common failure to assure students that they actually need to study some particular discipline. This hardly helps students' training - particularly it fails to make them actively and properly study for exams. These arguments against preparation for exams may sound sensible - nevertheles I will try to partially overcome at least one of them - namely the idea that marks don't reflect the things they are supposed to reflect. 

Let us put the question "Should we actively prepare for exams?" aside for a moment and try to understand why don't marks reflect the level of student's knowledge. As I have said it may be rather difficult to evalueate the level of knowledge via an examination. These difficulties are generally caused by the nature of examinations - I mean the examinations that usually face. Commonly the person who tests you tries to evaluate your skills by analyzing your response to his or her questions. Moreover, examiner usually pays attention not only to the correctness of your answers but also to their completness as well as to your behaviour. Answering questions correctly and completely may require remembering a lot of things while making a proper impression on examiner is possible if you feel - or, at least, look - confident. I've already mentioned the possibility of significant problems with confidence during exams. As for remembering lots of details relevant to any particular course, I truly believe that such a thing is not of any importance if we speak of education and skills obtained through it. Moreover, the more we move towards the age of higly available learning and reference materials (or are we already there?) - the less inportant becomes one's ability to remember numerous low-level details. Here is a simple example: some programming language tutors (not very good ones usually) do prompt students to remember various very-low-level syntax features of the language being learnt, while from my point of view it is much more important to explain students the overall capabilities of the language and the key paradigms it is based upon. At the same time remebering low-level stuff seems to me not important - it will be developed through writing many programs - not through learning the things by heart. This idea becomes quite vivid when we speak of a language with complex syntax - say C++. I don't actually remember all the low-level details of this particular language, but it doesn't prevent me from writing programs in it because I usually need hardly a couple minutes to consult language reference available online about any particular detail that I need to use. Such an example of examiner's requirements may seem exaggerated but I do occasionally face something like this and encounters of this kind don't encourage me to study harder for exams - in fact these don't motivate to anything good at all.

From the other side the requirement to remember huge amount of non-important details is frequently delusive. The reason for this is that right-minded and experienced examiners usually ask questions that do not require all the irrelevant things like remembering low-level details - instead they know the questions that allow them to more or less accurately assess whether or not a particular student understands and feels the subject. So their questions prompt students just to combine good reasoning with their conceptual knowledge of the course subject. I aknowledge the fact that not all examiners behave like this, but I do hope that most teachers that one faces during his or her study do have preoper objectives and therefore perform examinations in a good way.

It turns out that thinking of your examiners as of the good ones is quite a good and helpful attitude because, besides the fact that it is the right way to think of other people, it also helps you switch the process of preparation for exams from attempts to memorize lots of facts to the study intended to develop deep understanding of the key concepts, problems, techniques and other high-level stuff that is truly relevant to the subject. However, even in case you believe that the person who performs examination is a dumb monster requiring only absolutely irrelevant things from you, the situation is not as bad as it may seem from the first glance. Firstly, it is common to have wrong impression about the examiner and secondly, even if you are not mistaken, the preapration for exam won't do any harm to you (except for consuming your energy, of course) - instead it will still help you dive deeply into the matter of the course and hopefully get out of there possessing really good understanding of the stuff. In fact, if one meets the need to memorize lots of details, one will firstly try to understand the forces that produce these details and the connections between them - that is, unwilling to remember many irrelevant things, one's mind will attempt to understand the relevant ones.

So the intensive preparation for exams seems to be worthwhile. That's why, while I still consider marks non-reflective of one's knowledge and skills, after posting this entry I am going to get back to studying for my next examination. To be honest, I should note that, despite my beliefs, I am still quite eager to get good ones - sometimes the contradiction feels confusing. However, there are at least two obvious ways to make marks meaningful: either do nothing, or study hard.

пятница, 13 апреля 2012 г.

The Two Sources Rule

The notion that in modern world the amount of books and another written sources of information is overwhelming is not fresh at all. It was introduced several decades ago and has been becoming increasingly actual from then on. The invention of the Internet eased the problem in the way that it made the process of finding and getting books and papers that suit one's needs less painful. From the other side it left unsolved the problem of choosing a particular book. In fact, the issue became even more complicated given the fact that nowadays almost everyone can write a piece and publish it in the web. This leads to an increasing amount of written materials, but the good papers vs. bad papers ratio is likely to stay the same (in the best case, I mean). I suppose that frequently one's choice of reading is based on other people's recommendations (at least mine is) and this idea raises the following question:
How do we know who's recommendations should we trust?

Not so long ago I've explored a sort of rule that seems to guide my choice of reading . This rule simply states that I tend to read the books which were recommended to me at least twice, by two different people. The recommendation here doesn't mean that someone directly advices me - it may be a mention in another book I am reading, citation in an article or a review in a blog. (By the way, I've just said that most of the books I read I find through reading.)

It is important to note that I don't mean to say I had somehow developed and formulated the law and had been deliberately following it from then on - no, the thing has developed without a minimal effort from my side and I've only noticed that generally I do unintentionally follow it. 

Another interesting detail here is how I prioritize the sources of such recommendations - that is who's advice do I trust more. Plain logic suggests I should pay more attention to the advice given by the people I know well and vice versa. Surprisingly, it turns out that I tend to consider the recommendations by people I don't know personally more valuable and trustworhy than those coming from my friends or family. Such recommendations often appear from blogs by different programming and CS-related people (that's obviously because most blogs I read are mainteinde by people of this kind) - for example, recently I started reading "Godel, Escher, Bach. An Eternal Golden Braid" by Douglas R. Hofstadter and for that I should thank Professor Eugene Wallingford who has mentioned the book in his blog.


One more non-perfect example supporting the idea is related to the "Seven Habits of Highly Effective People" by Stephen R. Covey. My father had adviced me to read the book when I was about 15 years old. I did read it, but several years later - when I was 19. The thing that made me open the "Seven Habits" was a blog entry mentioning it by an individual whom I admired but never knew personally. I say that the example is not perfect because it fits precisely to the title idea of the entry - the book was recommended by two distinct persons and that may have made me start reading it. At the same time, the question of how I prioritize recommendations depending on their sources has first occupied me exactly in context of the advice that led me to reading the "Seven Habits" book.


Sincerely speaking, I can't find any good reason justifying such a strange priorities. The only idea I have about these is that most blogs and papers from which I get information on books are somehow connected to the fields of my interest whereas my father has nothing to do with, say, Computer Science or programming. This may be the point why I pay more attention to the recommendations from the blogs than those from my relatives - the former are just closer related to the stuff I am interested in. Still, this belief of me paying less attenton to my relatives' tips may prove to be false - especially considering the fact that I have read several books on economics that my father encouraged me to read - but, in case I'm not mistaken about the existence of such a rule, there must be some better explanation for such a strange prioritizing - an argument I can't formulate right now.

понедельник, 29 августа 2011 г.

Rough Me

Today I received confirmation of a good friend's of mine breakup with his girlfriend that had occured several weeks ago. I say "confirmation" because I was almost sure about that event due to more or less subtle signs, but wasn't told of it until today.

The story behind this breakup is rather long and unusual for me, though it's not the story or simple fact that bothers me. I faced somehow similar problem several years ago myself and remember the situation and my behavior well. Now I see that my friend has intentionally or not chosen the same attitude I had. So having some experience I'm pretty sure that the attitude is foolish and ineffective. I remember shaking myself and jumping out of that attitude after several weeks and it's obvious that my friend will also leave it, but I'm also confident that such an attitude isn't necessery or inevitable at all so I would like to see him leaving it right now. Unfortunately it doesn't seem to happen that soon.

I acknowledge that the situation is really difficult and sad for my friend and I'd better encourage him, provide some support and maybe pay a little extra attention, but I'm not that good about all these things. Moreover I'm sure that this crash is fortunate for him due to lots of different circumstances.
Thus I've just written down these simple thougths of mine and shared some extract with my friend.