The Difference Between 0 And Null

BEHOLD! The most VISCERAL representation of programming concepts known to mankind! Left side: toilet paper roll with actual paper (0) - it EXISTS but is practically USELESS with that pathetic amount left. Right side: an EMPTY roll holder (null) - absolutely NOTHING there, honey! The database weeps, the variables scream, and somewhere a junior developer is having an existential crisis trying to figure out if they should check for zero or null first. The tragedy! The drama! And you KNOW both situations leave you equally stranded when nature calls. Just like when your function returns either 0 or null and your code wasn't prepared for EITHER scenario!