That's too heady for me, Nitro! For me, its mostly stop running (fear), at the beginning of new trends. And greed (blow-off top/bottom), at the end. Over and over = Loser Psychology.
I have to admit, that I never thought Hartshorne would be considered a trading book Of all the math books I've read, that was the hardest.
Care to elaborate a bit, or am I going to be forced to look up "Abelian Group" on Wikipedia yet again?
Thanks for that. Now when people ask what I do I can say I work with sheaf cohomology. Sounds like GM food production.