We may not be able to go completely "without trust", but we can signifiantly reduce the amount of trust required. For financial contracts that can actually make

We may not be able to go completely "without trust", but we can signifiantly reduce the amount of trust required. For financial contracts that can actually make a lot of sense. There's an army of banking regulators in every country, and yet we still see bank failures where people lose money every year (even in developed countries with functioning deposit insurance there's usually a limit on the amount that is insured), plus we get the occasional financial crisis every few decades, after the memory of the last one has faded.