You are missing the point, and that is simply that AD, like Parkinson's, is a "constellation of symptoms" (Oliver Sacks) and that the etiology is not as simple as you would like to think. Dozens of factors are involved, not just misfolded proteins.
In economics and business decision-making, a sunk cost (also known as retrospective cost) is a cost that has already been incurred and cannot be recovered.[1][2][3] Sunk costs are contrasted with prospective costs, which are future costs that may be avoided if action is taken.[4] In other words, a sunk cost is a sum paid in the past that is no longer relevant to decisions about the future.[3] Even though economists argue that sunk costs are no longer relevant to future rational decision-making, in everyday life, people often take previous expenditures in situations, such as repairing a car or house, into their future decisions regarding those properties.
One of John's mistakes. How many others are there?
In economics and business decision-making, a sunk cost (also known as retrospective cost) is a cost that has already been incurred and cannot be recovered.[1][2][3] Sunk costs are contrasted with prospective costs, which are future costs that may be avoided if action is taken.[4] In other words, a sunk cost is a sum paid in the past that is no longer relevant to decisions about the future.[3] Even though economists argue that sunk costs are no longer relevant to future rational decision-making, in everyday life, people often take previous expenditures in situations, such as repairing a car or house, into their future decisions regarding those properties.
One of John's mistakes. How many others are there?