upgrade path
有出路
— Me@2012-08-06 8:28:47 AM
Somewhere in the course of doing Viaweb, someone gave me a very useful piece of advice: users always want an upgrade path, even though as a rule they’ll never take it. Rtml was our upgrade path. If you wanted to, you could get absolute control over everything on your pages.
— Lisp in Web-Based Applications
— Paul Graham
2012.08.11 Saturday (c) All rights reserved by ACHK