Sorry for the very likely ill-posed question. I have lately started reading a lot about quantum physics and the nature of electrons and I read about a phenomenon known as "electron capture" which can happen with a finite probability when an electron "finds" itself within the nucleus volume.
If an electron capture converts a proton and an electron into a neutron plus the emission of an electron neutrino, does this mean that all matter can "decay" with time?
I hope my question is clear enough for someone more expert than me to answer it. Thank you again for your time!