the.com/offset

Paying someone else to plant trees so your guilt can fly business class.

means To balance or cancel out one thing by applying an opposite force or amount — like counterbalancing a cost, emission, or error with an equivalent counter-measure.

from A straightforward 18th-century compound of 'off' plus 'set' — literally to set something off against something else, like balancing a ledger. It started in accounting and printing (an 'offset' press transfers ink from plate to roller to paper) before drifting into engineering, mathematics, and eventually the carbon-credit economy, where the oldest meaning — one thing cancelling another on the books — still quietly does the work.

origin
carbon markets started with the Kyoto Protocol in 1997
math problem
one tree takes decades to absorb what it promises instantly
audit gap
many forest offsets protect trees never actually threatened
real use
legit when paired with actual emission cuts, not instead of them
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