Very funny sierranevada...
You forgot to add that the earth spins a bit faster (or slower) because the weight of the RV puts more pressure on that side of the earth.
Just in case you were serious...we should take a poll of what percent of RV owners with slides have had their RV tip over without levelers extended.
I think one person said their's did, but there was no substantiation or pictures or forgetting to tell us that he was parked sideways on a 60 degree slope as well...
I open the slides without levelers down ALL the time. Take a look at your next WalMart on how many are as well. Never saw one tipped over
The issue is for sure: If the chassis is twisted - don't move the slides. And the coach should be reasonably level as well so the slide motor isn't fighting gravity. That's it. I welcome a mechanical discussion to the contrary, but whenever this topic comes up...crickets to the contrary.
I use the levelers, especially when the ground is level or if pavement just a tad of pressure to take the bounce out of the suspension.