I didn't mean it this way (but in a much more abstract way) -- but even here it seems to be true: If you really would understand the complex things (you mentio

I didn't mean it this way (but in a much more abstract way) -- but even here it seems to be true: If you really would understand the complex things (you mention) the same as the trivial ones (you mention), then you would be able to remember equally easy. So, the problem here is not the complex thing itself, but your non-familiarity with it.