It's funny that many people think about robotic stock trading that caos is going to ensue. They could not be further from the truth.
In my opinion manual trading causes more caos.
A robotic trader is going to follow the rules "every time", and they are "your" rules. It's not a drunk driver. It will slow down at yellow lights, and stop on red lights, and follow every rule of road "that you want it to".
Another misconception about robotic trading is that somehow you can control the markets. That is also false.
People will put money in mutual funds for years, and in last years case, lose 50%. But when they run a robotic trader, for some reason, they expect it to spew out thousands a day, and when it doesn't, they think that it doesn't work. Sometimes in a crummy market, not losing a bundle of money is a good thing in itself.
What they don't understand is that if their trader just made 1% a month, that is 12% a year.
You hit the nail on the head. When NOT to go into a trade is probably more important than knowing when to go into it. A robotic trader is excellent for finding reasons for not entering a position, as it can track so many more things than we can. And it does it while we go about our lives and not have to sit in front of a monitor staring at charts and graphs.
Cheers,
Ed