For day to day chart watching and order entry the man for the job is a computer. Telling the computer exactly how to do that job is difficult though... writing code for that has given me a whole higher appreciation of the human mind. Currently i'm pretty sure that humans are better at developing strategies.
That's my personal experience too, over the years. I tried many times to write down all that goes thru my mind while trading, trying to give the necessary input for programming, but I never succeeded. I only realized that it was a lot, and most of it goes automatically like in my subconscious.
The result of years training (reprogramming) my brain to see what is needed and ignore all the rest.