No matter how intelligent or detail oriented you were pre-procreation, once you've experienced pregnancy and given birth to another human being, you can kiss your detail-oriented, never-misses-a-thing brain goodbye. "Mom brain" is real, my friends, and it happens to the best of us. Thankfully, there are certain things you can totally blame on mommy brain.
Not too long ago, science confirmed the reality of mommy brain, and assured us all that it's not just an excuse we use when we forget to pick up the dry cleaning. Changes in hormones, lack of sleep, new demands on cognitive function and important decision making all combine to make a new mom's brain turn to a big pile of forgetful-soup. While we do have science on our side, validating our forgetfulness, it's also pretty frustrating and, sadly, unavoidable.
It does get better over time, though (and thanks the parenting gods, I'm sure). As your kids get older you'll get more sleep, develop helpful routines and your hormones settle down, so you'll start to feel like your respectable IQ wasn't completely deteriorated by your choice to become someone else's mother. So, the following scenarios, while legitimate and in no way your fault, aren't going to last forever. At least you know you can blame science, right?