The rational excuse justifying the emotional decision

People feel first and produce the procurement memo afterwards. The electric car wins because it feels quiet, modern and faintly like the future. Running costs supply the respectable paragraph. A buyer likes the software team because they seem safe to work with, then places “operational efficiency” at the top of the business case. The beautiful coffee machine captures desire; durability gets it past the domestic finance committee.

We are marvellous little barristers for things we already want.

That does not make evidence decorative. Rational criteria eliminate disasters, reduce regret and help a preference travel through other people’s scrutiny. Trust, pleasure and identity are also real outcomes, however much the financial model sulks about them.

The commercial disaster comes from choosing a side. Emotion alone can feel irresponsible when the stakes are high. Proof alone creates the product everybody approves and nobody desires. You need the spark and the alibi: something that creates preference, followed by a true reason the buyer can repeat without blushing. Lower risk. Credible cost. Reliability. Performance.

The alibi has to survive ownership. A fake rational excuse may close the sale and poison the renewal.

Marketing and sales can continue arguing over which half “really” caused the purchase. Customers will continue, inconsiderately, to use both. Desire opens the door. Proof gives it permission to stay.

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.