If I get a chance

to actually write an individual based model for the converse pleiotropy idea, I'll be programming in BASIC like I always have.  I never really learned another language.  20 years ago, one would have needed to learn a compilable language to have any hope of running bulk simulations with realistic parameters (e.g. population sizes in the thousands or higher).  But in recent years with PCs getting faster and faster, this is much less of an issue.  I really love BASIC.  It's intuitive to me and the simple programming methods are all straightforward.  Except that I don't know a fast sorting algorithm, which would be really useful for population genetic models involving selection.