There is literally no pattern in Dice or any other provably fair games. If you do see one, then it is just an illusion, because the reality is that the random number generator is the one sending them to you in the end.
If you try to double your capital again in the same (pesudo)technique, you could end up losing most of your wager instead of doubling again.
Take a look at his trust profile and you will understand better. Even if he is sincere in what he says, his brain is not big enough.
On top of that he says that he has managed to double the capital in 30 minutes, as if that was the result of his ‘study’ of the patterns. I hope he's a troll, otherwise he's going to lose a lot of money.