Common sense is not common.

That annoying character in The Land Before Time is not named Sarah.

Her name is Cera. As in CERATOPS.

The guy who runs Reddit is an utter douchebag.

Not quite recently, but after skating through high school and most of college I learned that if you read through your notes before a test you remember more things. I also learned that this is referred to as “studying”.

That you aren’t supposed to rinse immediately after brushing your teeth. It’s better to wait 15 minutes to let the fluoride strengthen your enamel.

Been brushing the wrong way for 30 years, apparently.