When Michael Nauss first sat down at a trading desk, his computer had a keyboard and a screen. But no mouse.

And his screen displayed an order book. But no charts.

Thus began his career as a scalper working the order book, who paid no attention at all to trends or technical analysis. He was simply trying to find spots to buy ahead of large buyers and flip the position out for a quick couple of ticks. Do this a couple hundred times per trading session and perhaps he’d have a successful day.