Hi,
From Bill Williams book (I've paraphrased):
Path of Least resistance
1. if selling has decreased on any down-move, the market will then want to go up (No selling pressure)
2. If buying has decreased on any up-move, the market will want to fall (no demand)
Bots are working out the path of least resistance. They are working out whether or not there is selling or buying pressure. When they find selling or buying pressure, they go with the flow.
A bot is not a market maker with that person's knowledge of supply and demand on their books and where the stops are.
But the Bot uses the much the same principles as an off-the-floor professional uses to determine where the Supply and Demand levels are. The Bot doesn't "see" anything the way a Professional sees it. But discovers where things are by actively probing. The bot is programmed to test to find where supply and demand levels are. When they've found them, they then go with the flow.
When a bot ticks up or down - it does so on extremely low volumes, often of only one share per sale or purchase.
Again from Bill Williams' book: lack of demand is pretty easy to pick out. Basically, you will be watching out for a low volume up-bar, on a narrow spread ...
So a bot, looking for "supply" will tick up perhaps a small series of narrow-spread low-volume up-bars ... and keeps doing so until supply kicks in. It then sells into that supply.
etc., etc.
Cheers
Red