You don't have to conflate current practice with perfection. You just have to bother learning what the current practice is and why - and "it's just so rare to k

You don't have to conflate current practice with perfection. You just have to bother learning what the current practice is and why - and "it's just so rare to know anything" is not the correct answer. Just to start with basics: yes, actually mammograms are analyzed using time series data of a patients previous scans!