geometric series may end up with nans
In the Generate Number Series dialog, if I set Type to "Geometric (samples)", I get a warning if I enter 0 for one of the range endpoints. However, if I set one end to a negative number and the other to a positive, I get the range endpoints and just NaNs in between. If both ends are negative, I get valid numbers. Doesn't need to be fixed now, but might be a good time to do it.
ref: see this