"Truth" is "what works."
All the technology that we're surrounded with these days, including the medium by means of which we're presently communicating, was created by people who were focused — in most cases from early childhood — on figuring out "what works," and using things that others had invented to figure out more of "what works" than their forebears were able to.
There was something about their minds that made figuring out "what works" enjoyable; they perceived it as pleasurable, often since the time they were toddlers.
James Clerk Maxwell, who was admired by Einstein, would as a little boy ask his mother this question: "what is the go of it?" He was too little to know how to say "how does it work?"
Exactly.