ormative prescriptive separate 're talking norm people like seek n't mean people consistently seek norm people course deceive looking diver like independent sources 're talking 're talking prescriptive strategy want clear yeah people think 're best 're best tend tend seek reasons 've given yeah okay next converge construct well construct well construct ca n't list features talked right right like bird features structural functional organization structural functional organization afford well talked last time give optimal grip phenomena right give way optimally gripping world need convergence structural functional organization helps get uh optimal grip world solving problems okay yeah 'm following 'm following think um jargon may less someone n't following conversations okay yeah let let give another visual example like last time okay 's object 's remote right uh uh marla ponti well want look want really close get lot detail might far away see whole thing 'm losing detail want look face side want look like notice look back lose face zoom lose gestalt look right 's trade-off relationships answer n't oh find average sit depends task 'm trying perform problem 'm trying solve button sticking want z