Earlier quoted context omitted.
Buying US stocks takes 2 days to settle. Sending simple wires in the US takes hours. Last time I tried to send significant funds from France to the UK, it took me a whole week of back and forth with the bank to complete all the AML/KYC paperwork. Let's not even talk about how long it would take to move gold from one part of the world to another cf. https://www.bloomberg.com/news/articles/2020-04-30/iran-is-h... You c…
A bitcoin transaction never settles. If a longer chain is created without that transaction it will become the current state and that transaction will be effectively rolled back.
Both are probabilistic and highly unlikely.