It's funny. My wife and I both tend to rely on our youngest daughter to remember things for us or for the family. And she is good at it. Asking the oldest to remember things is like asking the dog to watch your sandwich... She is just not skilled in that area, just like her daddy. I once stepped over something I had intentionally put on the stairs so I wouldn't forget it.
Thankfully, for our family, we have our youngest brain picking up the slack for everyone else.