Conversation so far:
What did Grace Hopper do after Grace Hopper retired?
she was hired as a senior consultant to Digital Equipment Corporation (DEC).
What did she do in this role?
In this position, Hopper represented the company at industry forums, serving on various industry committees, along with other obligations.
Did she give speeches?
She lectured widely.

Question: What was her biggest contribution post-retirement?
Self-contained rewrite: What was Grace Hopper's biggest contribution post-retirement?