On: Are Experts Real?

[0xffff2]

Saying something is immutable because someone may have saved an old copy before you mutated your own copy sounds very fragile to my ears.

[rubatuga → 0xffff2]

If you push to GitHub it won't delete it

[coding123 → rubatuga]

If you force push to github, the original commit (if not tagged or given a branch name) is absolutely de-referenced and may not be recoverable.