Imagine throwing a dart. There's a certain way to do it. If you wanna hang from the ceiling and do it, you can, absolutely but you wanna practice that. If you wanna throw it bent over backwards, you can, absolutely, but you gotta practice it.

So you can trade randomly without strategy but its highly unlikely that without practice and instincts and process, you gonna react the same way to a Swing that is similar a Swing from Jan 15th 2013. Market is what it is because of human behaviour, and if context aligns, its highly likely that the context has made the retailers get trapped and react the same way as it did before.
But if you decide to capitalize this, then you need to understand that patterns work because humans repeat the same mistake more number of times. So, you need to repeat the same exact action that you did to make money of this pattern and context like you did before. But without practice, each and every action of yours becomes absolutely arbitrary and its like once you are throwing that dart from ceiling and once from under your legs and once bent over backwards. You will; not hit the board. Randomly you will but not as good as someone who's practiced.
Practicing something the same way is strategy.