Last night at a party where all were speaking protuguese at once and I could not follow any, there happen to be a 2/3 full bottle of wine in ice bucket that was quite tilted. (too much ice in bottom had not yet melted.) I assumed the surface was horizontal to achieve the least energy state, but then noted the surface was an ellipse. Also that the minor axis of that ellipse was of length equal to the ID of the assumed circular bottle. I begain to imagine another plain passing thru that minor axis and diameter not quite horzontal. That would make a curved wedge shape above the liquid surface, exactly the same shape and volume as the part of that plan passing under the liquid surface. In fact if the new plane were the surface, the gravitational energy would be unchange - so why is the real surface horizontal? Quickly I supplied my self an answer: the new, not horizontal surface area is greater and that requires more energy even if the gravitational energy remains the same. At that point I should have drunk the wine but I realized if the surface were circular (not horizontal) same as when the bottle was vertical, the gravitational energy would still be the same, but then the surface energy required to make that smaller surface would be less - so the horizonal surface is NOT the least energy configuration, yet is seems to be the one the wine surface assumed - why? The only good thing was once again I was made aware of why I am never bored - mind constantly thinking even when for hours there is nothing I can do but sit and smile. I gave up on this problem after it entertained me for more than an hour. Then I evaluated the looks of the younger ladies at the party and drank more wine.