Is giving up always a sign of weakness or can it indicate common sense?

Stockton Rush was a guy who built a deep sea submersible out of inappropriate material for financial reasons, and also failed to include safety features because "safety is a waste of money" according to him.

He was told by his chief engineer, a safety organization, and many others that his submersible was grossly unsafe. He did not listen.

Instead of giving up and starting a new project, he ignored the advice he was given and took the submersible on a very deep dive to the Titanic wreck site.

He and four others were killed as a result of the poor design of the submersible.

Would he have been better off by giving up, or would that have made him "weak" ?

Is giving up always a sign of weakness or can it indicate common sense?
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