...She noticed/discovered that at some particular time of day there was some momentary spike in buying of an ES or some other commodity. She started digging around and found out that some big firm (Goldman I think) had it programmed to buy predetermined quantity on a specific day of the week at specific time. She milked it until they changed the method. These kind of edges are very real (not statistical/hypothetical) but obviously very fragile.
But if all you have is your chart and gut feel (experience), yeah you can sell that all day long.
Hey man, I'll share my findings here! (All times Eastern) I have found some patterns on equity futures too! The 10:30 AM reversal, the 2PM rush, the 3PM rush, and the occasional spike in activity from 3:30 PM until close!
And on some days, there's that MAD-HATTER shit on the last 15 minutes of the RTH.
And then on some days, there's just that 5 minutes when everything goes haywire! 3:55 PM to 4PM.
It's science, bitch!
If anyone seriously thinks that their system gets out and it stops working in a market like the ES is deluded with grandeur. Seriously.