hi,
this is brilliant square. anything that works 50-100% can be taken advantage. when i was trading FOREX, i found when there is a gap up the gap is closed within 1-30 minutes or so. so i wrote a MQL script to sell if there is a gap up and take profit on the previous day close. it worked for one day.
i never had a stop loss.. because i needed room for price to breathe. so another day i sold and price never went to open or my TP did not get filled. it went for a huge loss. i lost interest on it. but there are people who trade gaps really well.
any information we have can be taken advantage of .. IMHO.