Lambchops:
I don't subscribe to YM, so I cannot pull up a chart and have a look-see. Going by the Dow there was previous support at 15:00 ET yesterday. So his entry was correct, with a stop just below support. ie, if it was going to go wrong, he would know very quickly for a small risk.
I saw a large head & shoulders forming, and 15:00 ET yesterday and 10:30 ET today were the bottoms of the neckline. So RR took the trade up which looked as if it was going to form a right shoulder.
There's just so much to learn which, unfortunately, only time and experience will tell you. This way of trading is only learnt by your own efforts and observations, and those cannot be taught, merely experienced day in day out. 😀