Org-babel-dev: DEFERRED org-babel-tangle should check if in org-mode

DEFERRED org-babel-tangle should check if in org-mode

State "DEFERRED" from "TODO" 2010-05-26 Wed 06:56
State "TODO" from "" 2010-04-17 Sat 19:12

Why? I just successfully tangled from within my scratch buffer without any problems. If no org-mode functions are explicitly required, then why not let people tangle from wherever they like?