Looking at it another way, I think every individual electron exists on it's own, just as humans and planets exist on their own.
From Edward Frenkel, we have "... there are two kinds of elementary particles; fermions and bosons. The former are the building blocks of matter (electrons, quarks, etc), and the latter are the particles that carry forces (such as photons). The elusive Higgs particle, discovered recently at the Large Hadron Collider under Geneva, is also a bison."
It doesn't, though. In a Uranium atom, for example, there are 92 electrons, but there really are not 92 individual electrons at all. In fact, there is NO individual electron in that system. There is simply a system composed of 92 electrons but no single identifiable negative charge entity exists...
I find that hard to believe.
Electricity is defined as being a pressurized flow of electrons. AC is back and forth and DC is a single direction flow.
Meanwhile, Edward Frenkel uses an analogy to explain "quantum field theory."
Frenkel writes in his book "Love and Math,: ... "... think of quantum field theory as a culinary recipe. Then the ingredients of the dish we are making are the analogues of particles, and the way we mix them together is like the interaction between the particles."