Starship V3

Dyson spheres (or the more plausible sounding Dyson swarms) are not an actual physically possible thing, they're just a nice sounding sci-fi trope, like teleporters or replicators.

Freeman Dyson invented the concept as a joke against SETI, especially designing it to sound quasi-plausible.

In reality, there is no way to create a stable structure of this size, it would be like trying to balance a building on the top of a pinhead - except the pinhead is a chaotic, unpredictable star. And the amount of energy required to displace multiple planets worth of mass, manufacture some amount of it into complex satellites, and then displace this amount again to a "stable" Solar orbit simply doesn't exist in the Solar system, on any plausible time scale (it would take many thousands if not millions of years worth of solar power to do so).

> and it was a BA not BSc though that matters less

I've got no opinion on the existence and legitimacy of any degrees Musk may or may not have, but whichever he does have you really can't infer much at all from whether a STEM degree in the US is a BA or a BS without looking at the specific requirements for the degrees at the particular school.

Some schools might give a BA for a program and other schools might give a BS for a nearly identical program. All of these happen in the US:

• BS is the only choice. (Caltech, for example. In fact, Caltech only offers BS for everything. Even English majors--and yes, there is an occasional English major at Caltech--end up with a BS).

• BA is the only choice. UC Berkeley is an example in this category for math and physics.

• Both are offered, with identical coursework and requirements. You can have whichever you want. Some will even for a small fee give you two diplomas, so you can use whichever seems appropriate for the situation.

• Both are offered, from the same department, with different in-major coursework and aims. One may be aimed toward students aiming to go into research, and one toward those aiming to go into teaching, for instance.

• Both are offered, from different departments. For example, UC Berkeley's College of Letters and Sciences offers a BA in chemistry, and the College of Chemistry offers a BS in chemistry. Computer science can be taken at Berkeley in the College of Letters and Science for a BA, or in the College of Engineering for a BS.

• Both are offered, with the same in-major coursework, but differ in out-of-major requirements. So, the BA and BS would require the exact same science and math courses, but the BA has specific breadth requirements to produce a well rounded education, whereas the BS lets you take pretty much what you want as long as you satisfy the math and science requirements and any general requirements of your school.

> Yes, Elon is very sane.

tbf, a 'sane' person wouldn't have started a rocket company and an ev company, at the same time, in a recession.

He has never been sane. and that has made all the difference.

What makes Elon complicated is that he is not just a scam artist. He has an eye for talented people that do good engineering while working for him, in spite of his personal flaws.

For all the lies, bad behavior, and broken promises, SpaceX's achievements and reliability record is still incredible, X/Twitter hasn't crashed and burned after all the layoffs and drama, and Tesla (until recently due to his meddling) had a lock on the leading the car industry's direction & doing a lot to drive practical electrification globally.

Let's not forget that physics confiscates satellites pretty quickly too. I realize I didn't say it explicitly, but I was assuming that this hypothetical land-based hardware would have access to only the same resources available to the satellites, namely sunlight and a network connection. That makes it somewhat less politically charged than a DC tied into local infrastructure.