I take liberties with everything, including good taste, and by abandoning the favourite time-travel trope of "history is fixed" I can take liberties with the plot logic. (I do have people who can remember the things that no longer happened, which is a handy plot-device, but realistically would get them medicated or detained for the good of society.)My current WIP is SF set in the asteroid belt. I pay attention to physics though I take liberties with materials science and biology.
Good idea! Also helps with a sense of accountability for those who need/want it... (I certainly do!)I feel we should do one every quarter to keep things manageable.