Prohibited from even going to the comfort room , he had to relieve in his pants until Almendras ' arrival . wow ! Poor man talaga . Curious lang talaga ako anong pinagsasabi niya habang Ihingihi na sya XD <| sep |> Drfr skall de ses i vr med rtt publik och p stllen som r mycket mer lmpade fr deras gig . <| sep |> The key point is the difference between mass and weak eigenstates . When a neutrino is captured it is interacting via the weak force , which conserves flavour and lepton number . This is why an electron neutrino must produce an electron etc . When neutrinos travel , they oscillate because the weak interaction that produced them is not in the same basis as their mass . What this means is if i produce an electron neutrino , then if I try to measure it ' s mass I could get one of three answers , because it is in a superposition of the three possible mass eigenstates . Let ' s say I get some particular value for the mass by doing this . Then the neutrino propagates some more and interacts via the weak force with some matter . The flavour of neutrino that is involved in the interaction now is not necessarily an electron neutrino , it is a probabilistic combination of the three neutrino flavours . Hence neutrino oscillations have violated flavour conservation . Happy to follow this up with more information , otherwise I hope this helps ! Edit to clarify , I mean at a single vertex with a weak boson the charged lepton and neutrino must be the same flavour .