Around here, the same kind of demographic often replaces the ellipsis with ',,,'. It's both mind-boggling and fascinating, raising so many questions that I'm neither mentally prepared nor qualified to ponder.

Right, so the light is actually pushed up by these buoyant forces and I guess that then also explains why it's so dark underground. Fascinating how learning some little new details about the world can sometimes make it all just click together!

But does that mean that light is actually hollow?

Shpongle, when the walls melt.

Yep, once anyone can download an app on their phone and do something like this without any effort in realtime it's going to lose its (shock) value fast. It would be like sketching a crude boobs and vagina on someones photo with MS Paint and trying to use that for blackmail or shaming. It would just seem sad and childish.

Practical, but not really equivalent though because of nil punning.

The locking down started with the original MacIntosh (or actually with the Lisa I guess). ISTR they had at least one bit more open period after that, but those have always been the exception.

Wouldn't it be more correct to say that most Americans also use a messaging app (iMessage). The rest are just stuck with SMS to have compatibility with the iPhone users.

As the iPhone was (is?) not as popular in the Europe as it was (is) in the States that might also be one of the reasons why people here ditched SMS so fast once smartphones got popular.