To destroy relationships or eliminate future opportunities through hostile or careless actions, making it impossible to return to a previous situation.
This phrase comes from military strategy where armies would literally burn bridges behind them to prevent enemy pursuit or their own retreat. The metaphorical use developed in the early 1900s, emphasizing the permanent and often regrettable nature of severing connections.
The military origin reveals something profound about human psychology - sometimes we destroy our own escape routes to force ourselves forward, but unlike generals, most people later regret eliminating their options. It's a strategy that works better in war than in careers!
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