Irreversible?

Ir‧re‧vers‧i‧ble [ir-i-vur-suh-buh]
adjective
not reversible; incapable of being changed

How irreversible are things? Even those irreversible chemical reactions are technically reversible, just that the reverse reaction is just too insignificant.. Plastics too.. not all plastics break down and turn into irreversible pile of mess at high temperatures right? (they are called thermoplastics btw) Alright, i concede.. a twisted metal slinky is indeed irreversible cos even if you could untangle the twisted parts, the slinky would still be deformed and unslinky-like.. (don't try this at home, I had 1st hand experience... lol)

Why would one reverse a decision then? is it because one's circumstances had changed and at such, the previous decision would have been null and void? Why even make such a decision in the first place? Decisions are like slippery slopes.. you can only live to regret them..


updates: juggling skill = decent with 3 items; solving rubik's cube = able
btw, there's a problem with people who knows how to solve rubik's cube, they just won't leave an unsolved cube within their vicinity.. lol