Somatic brain · Interface Friction & Flow
Sticky / Persistent Navigation
Keeping the action button fixed on screen as you scroll means the ask is always one tap away; useful for long pages, and a constant nudge that never lets the decision rest.
An everyday example
A floating 'Buy now' that follows you through the reviews.
What it can cost you
Acting the moment a doubt resolves rather than after all doubts are considered.
Warning signs
- I bought halfway through the reviews.
- The button was there exactly when I wavered.
One thing to do
Read the whole page, then scroll back to the top and decide.
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