Why do the lines have different total length?

Assuming all the airports can be reached in 4 hops, than the total length should be the same - while the differences would be in the lengths on individual components.

Sorting by 2 hops seems very arbitrary. Finding a certain airport means scanning the whole list. I would suggest sorting by IATA code.

Came here to say exactly this. And I wanted to add: and he knows it!

What do you mean by 'detailed'?

Not 'only'. Fund can be dismantled and all the money returned. And what good come from this money sitting in the account? Please don't tell me there's no charity out there who is worthy of Musk's money. It's an obvious tax dodge.

"still needs" is the most significant part of the sentence.

Yes, but if Musk's fund haven't actually donated to any charity, is he really a philanthropist?

If a mega-billionaire donates 2.4% of his fortune to charity but no charity gets any money, does it actually count as philanthropy?

That’s a lingering question surrounding Elon Musk, the Tesla chief executive and world’s wealthiest person, over the past month. A terse regulatory filing in mid-February disclosed that Musk, who is currently worth $235 billion according to Bloomberg, had earmarked $5.7 billion worth of his Tesla shares for charity in late November. And yes, that’s the only detail Musk has provided about where the shares have gone: “To charity,” according to the bare-bones prose in the SEC’s disclosure form. No nonprofits have recently announced receiving any money from him, and Musk did not respond to several Fortune requests for comment.

From Fortune website