Scale matters because it changes how we physically relate to the work.
天下的事情有难易之分吗?只要去做,难的也会变容易;不去做,容易的也会变难
Manufacturing excellence is a journey, not a destination.
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.