Yes, I had thought of that, but really - if you had to bet on what would really happen, where would you put you money?
I'd put my money on what is likely to emerge naturally, given an enviornment open to natural selection pressures. And, in the long run, in such an enviornment, perhaps Altruistic Tit-for-Tat is not as unlikely as you think! After all, it seems to have emerged naturally, in ourselves and other lfie forms, in the form of Reciprocal Altruism.
The Selfish Gene does a good job describing this, in one of its chapters (2nd Edition or later).
Perfect game theory only really works if everyone involved knows, understands and uses perfect game theory. How likely is that to occur?
You are assuming one can not develop the ability to inately act in a manner that allows them to play a perfect game, without conciously understanding what a "perfect game" is.
But straight tit-for-tat isn't the most viable. Tit-for-two-tats is a much more succesful strategy, and I beleive there are several others that have been thought up, although they are usually much more complex. (snip)
Technically, you may be right, for some enviornments.
Also, if you can deduce someone is playing Altruistic Tit-for-Tat (ATfT), there are ways to take advantage of that, and beat 'em. Therefore, ATfT is not always the perfect strategy. But, in most competitions, it does seem to win the most battles, as far as I recall.
And, complexity of the strategy usually has little to do if one wins or not, as far as I understand.
Also consider that ATfT is more likely to emerge, because of its simplicity. That does not mean it is necessarily better, but in context of this thread, you could argue that the phrase "Do Unto Others..." came out as a result of this natural tendancy.
What is tat, where do I get it, and how do I trade it in for the other thing?
Ask your local fine tea shops and dairy farms.