How we accept that personality has changed but we underestimate how much it will

Today’s personality has examined all previous versions of you and declared itself the final release.

Arrogant little sod.

We remember changing enormously, then predict almost no further change. So we sign twenty-year commitments on behalf of a future stranger who has neither read the terms nor been invited to the call.

A career choice becomes an identity tattoo. Software bought for twelve people becomes a concrete boot when the company reaches two hundred. A home is rebuilt around one phase of family life, as if children, knees, parents and working patterns have signed a non-aggression pact with time.

Commitment is valuable. Love, craft and difficult projects would be impossible if we kept one hand permanently on the exit. The mistake is treating a preference forecast as a notarised fact.

Anything lasting decades should leave the future self a little negotiating room. Modular designs. Break clauses. Review dates. Staged decisions. A deliberate point at which everyone can ask whether the old assumptions still live here.

Optionality costs money and can become cowardice dressed as flexibility. Spend it where change would otherwise create a trap, especially when reversal is ruinous.

Current preferences feel authoritative because they are available for interview. Future preferences sent no representative.

Silence is a terrible basis for assuming they agree.

Behavioural principles

Behavioural ideas at play in this post

Short, plain-English explanations of the principles behind this post, with links to related books and examples in the archive.