[dylangs1030]

I agree. I would place much more emphasis on high-level mathematics, algorithms and data structures.

I believe mastering two languages with complementary strengths would be far preferable to just syntactically learning a bunch of languages.

Stated another way, I believe if someone can program at an expert level in one lisp, they probably don't need to insist on learning more of them.

If you progress to "merely adequate" in a smorgasbord of languages but all you can do is churn out CRUD apps but couldn't implement basic algorithms for a search engine you've plateaued.