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How can you allow the trading companies to locate computers closer to exchanges and flash millions of bids to give an unfair advantage?... Even professionals are losing faith in some aspects of the system.

Stock exchanges say that more than half of all trades are now executed by just a handful of high-frequency traders, who use rapid-fire computers to essentially force slower investors to give up profits, then disappear before anyone knows what happened.

We built a market at IEX that does not sell certain types of technology advantages to high-frequency traders, and as a result, the high-frequency traders that didn't rely on buying those advantages trade on IEX.

Some people are so busy learning the tricks of the trade that they never learn the trade.

Trade on the Internet is becoming very widespread. The problem is our laws have not caught up with electronic commerce.

People don't understand computers. Computers are magical boxes that do things. People believe what computers tell them.

They were saying computers deal with numbers. This was absolutely nonsense. Computers deal with arbitrary information of any kind.

Something else has happened with computers.

People in the industry foresee a time in which, for many people, the only thing they'll need on a computer is a browser.

Computers are like Old Testament gods; lots of rules and no mercy.