Can’t seem to remember where you put your keys? Have your glasses gone missing again? That pesky ATM code just slip your mind? Memory is a fickle thing but with 86 billion neurons in your brain you’d think you have enough room in there to remember where you put your pen. We forget things all the time, and according false memories scholar Elizabeth Loftus there are four main reasons why; retrieval failure, interference, failure to store, and motivated forgetting. This article from psychology expert Kendra Cherry gives a quick overview of these principles but if you want a more in depth study you can watch Loftus’ TEDtalk here. No matter what you forget though, remember to take a break and read more comics.