What is a sunk cost?

  • A sunk cost is a sum paid in the past that is no longer relevant to decisions about the future
  • In a world where people change over time, anchoring decisions based on past efforts (that can’t be refunded) is a devil

Impact of sunk cost

  • They make our future selves prisoners to our past and different selves.
    • Its equivalent to a stranger making major life decisions for you.

Avoid sunk costs

  • Goals made when you were a different person should be abandoned without mercy.
    • This is a good strategy to minimise future regret

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