Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.
The energy sector is not just an industry; it's a vital part of global development.
数学中的合作是必不可少的;思想的交流导致了任何单一思维都无法独自实现的突破。