A timeless idea, or what I sometimes call Timeless, with a captial T, pertains to an idea, concept, or thought that doesn’t have any correlation in time, whatsoever. It is the result of the mind wandering in places it didn’t deliberately go to.

It is the result of imaginative exploration and Play, whereby the formulation of an idea, concept, or thought is the result of serendipity, rather than manual labor.