[thaumasiotes]

"Fearless concurrency" and "zero-cost abstractions" sound a lot like meaningless marketing terms.

[rdiddly]

Dunno about "fearless concurrency," but "zero-cost abstractions" and "move semantics" are straight off the front page of rust-lang.org. So they're kind of marketing-ish in trying to make you go "hmm sounds intriguing" and click to find out more.

[jarman]

"fearless concurrency" is meaningless marketing, "zero-cost abstractions" is valid term