New member You mean, technology as the third arm after maths & physics? It follows from the first two - knowing about atoms and how they behave enabled us to invent the transistor, for example.
I've been reading "The Mind of God" by Paul Davies. It pretty much covers my area of interest though, of course, it doesn't answer the question of WHY we know so much. In Chapter 6, "The Mathematical Secret", he says "It is as though human thought is, instead, being guided towards some eternal external truth..."
and
"[w]hat is remarkable is that human beings are actually able to carry out this code-breaking operation, that the human mind has the necessary intellectual equipment for us to 'unlock the secrets of nature' and make a passable attempt at completing nature's 'cryptic crossword'."
I haven't finished the book yet. My next text will be
"New theories of everything : the quest for ultimate explanation" by John D. Barrow.
Most people seem to just accept that humans are so clever, or just don't think about it.
My current view is there is "something" at a higher level of "existence" than time and space. Whether it's "guiding us", and to what end, I can't imagine. Nor can we probably inquire into "it" in any meaningful way - we stand in relation to whatever "it" is as, say, ants to the earth they inhabit.