> Using insider information is how you are supposed to win these. Otherwise it's just random gambling. Not nearly. If nothing else, there's still time arbitrag

> Using insider information is how you are supposed to win these. Otherwise it's just random gambling. Not nearly. If nothing else, there's still time arbitrage and at least some amount of information processing required. Even efficient markets need somebody doing the leg work and making them so, especially when unsophisticated traders are participating too.