You can be certain that any adjustments will be in the brokers favour.
There was no warning, SNB said it needed to be a surprise. Stop losses were not honoured because for a while there was no liquidity. The market makers pulled out.
There are some traders saying they called it, but law of averages would dictate that some people would be right in their guestimates.
Best regards Steve
11:15, restate my assumptions: 1. Mathematics is the language of nature. 2. Everything around us can be represented and understood through numbers. 3. If you graph these numbers, patterns emerge. Therefore: There are patterns everywhere in nature.