Secret of success: buy low, sell high. Unless you are a Coinbase customer (because they will selective disable your ability to act when prices move quickly). I

Secret of success: buy low, sell high. Unless you are a Coinbase customer (because they will selective disable your ability to act when prices move quickly). I've witnessed it at least a dozen time personally, and stopped trading altogether. Seriously though, the way Coinbase/GDAX has been acting recently can't be attributed to scalability issues. These patterns seem to have a good dose of human decision making in them.