[sargstuff]

Buisness world startup equivalent would be know your market audience.

Start out to broad and wind up wasting resources that could be put to better use.

Start out to narrow focus without knowing where need/$$ to keep going is and wind up wasting resources. Idealy, the narrower focus permits getting to the 'wasting resources' point faster.

Hiding the details via abstraction when details are still in development/need to be viewable & readily available defeats the purpose of abstraction making things simpiler/easier.