"""GMail by all rights should be the dominant email client today, or at least every other surviving email client should have copied the conversation view from G

"""GMail by all rights should be the dominant email client today, or at least every other surviving email client should have copied the conversation view from GMail.""" Some people (for example, anyone on a *-devel list) use email for things more like meetings or group discussions, rather than one-on-one conversations; an email thread can be concurrent/nonlinear. Collapsing everything into a single list interferes with seeing what's been responded to and what hasn't.