I'm really sorry for the negative experience bug, but if you get a lower amount of experience than before, it was because I changed the formula to gain experience. The new formula make experience harder than before to gain. If you got a negative amount of experience on reset, it should be fixed now.
Sorry for the inconvenience, and thanks for playing! :)
"Trapped HD" usually refers to the high-precision laser spectroscopy of trapped hydrogen deuteride molecular ions used to determine physical constants and test QED. It can also refer to the 9-1-1 TV episode in high-definition or the trapping of molecules in zeolites. Dynamics of HD Molecules Trapped in Cages of Zeolite