Solving for one, extending to many through a persona spectrum is an inclusive design tactic that helps solve problems for the broadest possible audience. It involves creating personas that represent different levels of ability, context, and preference, and designing solutions that meet the needs of the most extreme cases, which can benefit everyone else as well. References:
https://trailhead.salesforce.com/en/content/learn/modules/salesforce-strategy-designer-certification-prep/solve-fo