Not the least of which 

Means there is more. 

Whether you want it or not. 
I forgot what was important and in the forgetting wonder if it’s less important or if I am just failing in some way to grasp the weight of how important it is to remember everything important.
Like a notification telling you that your package has shipped. A letter telling you that you are being investigated by the authorities. A ring around the full moon, drifting, so that you wonder if you are the only one who sees that.