What a week. The crypto industry is in total panic. Trust in centralised exchanges is at an all-time low. Centralised exchanges are seeing a huge outflow of capital. Some to other exchanges. Others to non-custodial wallets. Many see the FTX collapse as proof that the only secure way to hold funds is to hold the keys yourself. But reality is far more complicated. Advocates of people holding their own keys don't seem to realise how dangerous it is for one to hold their own funds. An estima...