Charlie Kirk was not an elected public official, but he was definitely still political in a way that a lot of regular Americans are political. So even if it's less significant with regard to elected officials being targeted, it was political violence that regular people felt and could conceive of being targeted with, for similar reasons as Charlie. I believe that was what made his assassination resonate with people, much more than an elected official being assassinated does.

With this in mind, most "friendships" on social media are driven by the ideas you align with, and it is a reason why the old idea of "cancel culture" can be subject to such whiplash. If you are only friends, followers, or mutuals with people who believe the same ideas as you, one of them expressing an idea you did not think they would have might lead you to distrust them - even though you don't know them as a person at all, but a "collection of ideas" you agree with.

Otherwise, show her Mario Paint and MAKE some art :)

We see stars in our galaxy because they are close enough to us that we see them as individual stars. Compare that to the Andromeda Galaxy, which is far enough away that without intense zoom, it looks like a single source of light. There are galaxies even farther away, which we cannot see with the naked eye at all, but zooming in on them like Hubble did means we eventually get enough resolution to see they are individual galaxies, unfathomably far away.

JWST being able to see infrared means we'll see galaxies that are so far away, their light is redshifted so we (and Hubble) cannot even see them at all.

With regards to your question about how to test the bubble hypothesis posted by parent, we would be limited by how variable our point of view can be. We can gather what data we can at one end of Earth's orbit, and then try to see from the opposite end and compare what we see, comparing data sets to see if certain galaxies or stars are in different positions. We already do some of this when dealing with gravitational lensing and I believe it's one of the primary ways we can detect black holes, as they bend light a lot.

Philosophical reasons to exist are great, but philosophy doesn't pay the bills, it seems.

So a lot of the power of the President to direct foreign policy is because they essentially control the military and many other countries rely on the US military for a lot. On the other hand, if you anger the US, the President can decide to change tactics suddenly such as Obama increasing the use of drone strikes or Trump using NATO as a bargaining chip.

The US is still looked upon as the final say in military situations because it also has the largest military in both active combat forces and equipment.There is an expectation that the US will act as world police - I remember Obama catching grief over not intervening in Syria. All of this adds up to America being "the big stick" and has somewhat changed the Presidency. This is also why Isolationism vs Interventionism is such a heated debate.

Would it be any different than if aliens could beam signals to individual neurons to force you to do something? What about a skilled surgeon with an Arduino, or those seizure prevention circuits they can install?

The numbers look even worse with helium, and it's a lot easier to make hydrogen than to capture enough helium. I'd love to see some kind of hybrid airship/aerofoil system that could lift more with powered assistance, but I don't know if that would be more or less efficient than huge cargo jets.

Compared to modern music where the instrument isn't limited by the sounds it can physically make (due to digital production) as well as the things they make each instrument do, as you said much of modern music is carried by a beat rather than a melody, so a vocalist might be the only discernible melody. Back to a pipe organ, it would be really difficult to play a modern song on the pipe organ as a result because the structure is so different that it's hard to really compare. However, the pipe organ was a marvel in that it allowed a player to basically BE the entire orchestra if needed.

80s music was intended to be played on a boombox radio with no sub-woofers and still represent all the sounds the band recorded. In the end, it's just one of the ways music has changed over the years.