[mcv]

Particularly, that they picked a very risky investment for money they couldn't afford to lose. There's nothing wrong with investing money you need, but you should invest it in a safe, low-risk way, like a savings account or bonds or something (though those have turned out not to be entirely risk-free either).

High risk investment, like, oh, some totally unproven payment technology, is only for money you can afford to lose.