This principle helps explain why people behave differently from what pure logic would predict.
More quotesThere is a grim temptation in this finding: if people defend their beliefs less effectively while distracted, then perhaps persuasion should wait until their mental guard is tying its shoelaces.
That may increase conversion. It may also make you a bit of a shit.
Consider where we already see it. Add-on insurance appears after the buyer has chosen the expensive item, entered an address and begun wondering whether the parking ticket is due. Cookie banners present their fiddliest choices while the article waits behind them. A caller unloads the crucial price while the customer searches for a pen. Cognitive load becomes a lock-pick.
There is a more useful reading. Rejection is often rehearsed. People generate familiar counterarguments before a pitch has finished because the category has trained them to. A small change of context—demonstrating a tool while someone performs the task, offering a sample during the moment of need—can interrupt the script long enough for new evidence to register. That is different from obscuring consequences. One opens attention; the other exploits its absence.
The ethical line is wonderfully practical: would you still want the person to agree after they had slept, reread the terms and told a friend? If yes, reducing reflexive resistance may help them see. If no, distraction is doing the dishonest work.
People can be persuaded when their defences are occupied. The question is whether your argument deserves the unattended door.