I learned a while back how the expression “first in, last out and last in, first out” describes how the loss of memory works in patients suffering from Alzheimer's disease and dementia.
By Carole B. Larkin
Alzheimer's Reading Room
The expression, First in, last out ... Last in, first out, is a short way of explaining that the things we learned long ago, like in childhood or when we were young adults,
stay in Alzheimer’s patients’ memories longer than things they learned or experienced recently.