I think (knowing Tom) that he is aware that -290 is below 0K.
However, an application should not crash or show other weird behaviour, even if a user is putting in data (even using DRE, which IS a tool supported by Laminar) that makes no sense.
Furthermore, I think that Tom´s discovery could help solve the "teleport to E46 bug" - so pointing out that -290 is not physically possible is beside the point.
Its like making an addon plane that crashes to desktop if people bank it more than 30 degrees, and then saying "well, airliners shouldn´t bank more than 30 degrees, so don´t do it!"
Jan