So then , why when they measure and observe it, it will behave like a particle, and when not observing like a wave, in the double slit video experiment..

So what does observing actually does? is the though, the concioness of expecting something, limited by our "limits" that will create the reality??

if quantum is not real in the real outside, why care about it? only if one can control or make it real , than thats worth it.