https://www.theguardian.com/commentisfree/2023/aug/16/elon-musk-mark-zuckerberg-cage-fight

America’s richest and most cowardly man, Musk, proposed an idiotic cage-match, then came up with every excuse not to actually do it

Never challenge anyone to a fight. Not even if you think you would win. Especially not if you think you would win. To break this commandment is to invite the wrath of all universal karma down upon your head. It is to engage in the folly of hubris, to break the prohibition against violence, and to set oneself up as a poster child for “getting what’s coming to you”. As a general rule, the people who forge ahead in defiance of this wisdom do so only because they are spoiled, confidence-poisoned children who can only learn things the hard way.