Quarks do this too. Atoms are made of protons, neutrons and electrons - the protons and neutrons are made of quarks. No-one is quite sure what an electron is, although evidence increasingly points to it being a packet of energy rather than a particle. More solid stuff, the nucleus of the atom, is comprised of positively-charged and neutral material, the proton and neutron respectively, and the quarks which make them up are also changing from one form to another all the time. Thanks, that is, to Gluons.
That stunts the growth of new developments which could mean a lot to those of us who would like to know what all this really means to our modes of living. What our thoughts really are, for instance, and how they are transmitted, for many readers will have experienced (as I have) ample evidence of communication that transcends technology. How we instinctively know things - what does it mean to trust our gut? Finding neuron networks in the heart may have helped to answer this question, but it hasn't told the whole story sufficiently for us to understand the mechanics.
The quantum world is stuffed with answers to questions yet to be asked of a picture as beautiful as it's true, and those quarks I keep talking about - Beauty and Truth - will claim their rightful names again with due reverence.
That's my prediction, anyway. And I'm still holding out for the Petrino.