Hello, "Quantum Mechanics" by Basdevant and Dalibard tries to qualitatively deduce stimulated emission of atoms shined upon with some light by using Bose Einstein statistics. Imagine a certain photon in eigenstate n and if we turn on a potential v temporarily, the chance of it ending up in eigenstate m (after turning off the potential v), is alpha. The "theory of N identical bosons" (I have to give it a name) tells us that if we do the same but now with that one photon in a batch of identical photons already in eigenstate m (before turning on the potential v), then the probability of them all eventually being in eigenstate m, is much larger than alpha (after turning off the potential). So in a certain sense, BE statistics indeed gives a sort of stimulated transition in some cases. The book, however, immediately goes on to state I find this explanation rather vague, more specifically I don't understand how the bold follows from the previous: the case of stimulated emission seems to talk about the creation of a photon, whereas the previous was talking about the transition of a photon... Also, I don't know what the temporary potential is in this case. I realize there are other ways to explain stimulated emission. But what I'm interested in is understanding the above explanation, or hearing that this explanation is rubbish. Thank you!