I had an interesting thought: does seeing a need in a general scenario mean that others in the same scenario too see the same need and usefulness? If so, does this also relate others to you in some way ?

Example. If only for a moment you see the usefulness in something, is it others who are like you in some regard, that too see the usefulness? if your perspective on seeing the usefulness is one related to how you feel, can you safely assume that others feel the same - in general - the majority? sure you'll have individual exceptions...

another example: say I don't wear stylish clothes but wear comfortable clothes as I view most comfortable clothes as unstylish. i think that logically being comfortable exceeds the need to be stylish. Can I assume that someone with a casual outlook on clothing shares my logic? and more importantly other logic that is similar to mine? sure some just have a poor dress sense but surely not majority of these people.

if this is the case, advertising based on the majority idea would work for the majority of the population involved in the scenario.