They are just subconscious imaginations that need to be worked into being, they are only contagious to your conscious state when you apply some form of actions/efforts to actualize them.

Dreams need the right talent to match up with the kind of dream you have, then you persevere in where others could not prevail, make a way of making impossibilities become just mere English words that can be broken with just the right tools in a given task you want to...