It actually depends on the idea. Einstein&#x27;s theory of General relativity and special relativity are &quot;ideas.&quot; So are my &quot;ideas&quot; for building the next facebook killer. One is more complex and &quot;correct&quot; than the other, and each &quot;idea&quot; is merely a description of things—a collection of infinitely smaller ideas. Descriptions can be detailed, wrong, or absurdly vague.<p>I have an idea for obtaining two apples. It involves going to the apple tree and obtaining another apple and adding it to the one I already have. Simple, but valuable idea because its constituent ideas are probably low cost (the apple tree has apples... find an apple tree... reaching for the apple is also a simple concept). Of course the value of this idea is the sum of its constituent ideas. So it may turn out that there are no Apple trees in the vicinity and no one knows where to find one. Then the value of the idea is inversely correlated with the cost of the constituent ideas (finding out who has an idea where there is an apple tree). The idea for physically obtaining the apple once you are at the tree is to physically reach your hand up to an apple and apply a sufficient force to remove it from the tree. It&#x27;s a brilliant idea, but it is also cheap since 90% of people over 3 years old probably know how to do that.