I don't think anyone knows the answer.
I don't think anyone knows how to make a cell phone.
Sure, there are people who know how to put the parts together.
Sure, there are also other people who know how to produce the processor
inside it.
And yes, there are people who know how the plastic and metal parts are
produced.
And there are even geeks like us who know how to do the programming, or
even understand the complicated communication protocols used in a cell
phone.
But i don't think anyone knows how to transform minerals, oil and
chemicals into a working cell phone.
Although many people think they know how a cell phone works, they only undertstand at one certain level of abstraction.
So if nobody knows how to make a cell phone, how can they exist?
Only Aunt Hillary can understand...