Giving robots a durable sense of touch will be a breakthrough for humanoid robots.
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Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
"I've sat down in my chair and my bed enough. It's time to walk now."