get desiredSize() { return closed ? null : 1; },
For implementers, the locking model adds a fair amount of non-trivial internal bookkeeping. Every operation must check lock state, readers must be tracked, and the interplay between locks, cancellation, and error states creates a matrix of edge cases that must all be handled correctly.
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All of this brings me back to the question that's been haunting me since discovering the Dreamie: Is it ridiculous to spend $250 on an alarm clock/noise machine? At a different time in my life, I would have said yes without hesitation. But the current version of me, who knows what it's like to move through each day like a zombie because I'm sleeping so terribly, would begrudgingly disagree. As I pack up this review unit to ship it back, I'll also be putting in an order for my own so I can keep my cherished new sleep routine going.
However Nasa's lunar plans have a major missing part - the lander that will take astronauts to the Moon's surface has not yet been selected.