Over brunch at University Cafe.
RB: "Did you get my card?"
Me: "Oh, I haven't gone through my mail in a month. It takes so long to file the papers into my filing cabinet."
RB: "Why don't you just dump them into a shoe box?"
Me: "I file them into individual folders for bills, insurance, mortgage, etc."
RB: "How often do you go back to look something up?"
Me: "Almost never. Maybe once a year."
RB: "So you do frequent writes, and infrequent lookups. Why would you choose to pay the cost on write? Just dump everything into a box and then sort through it if you ever need to look for a particular item! You would never design a software system this way."
Me: [stunned into epiphany]