@SyagLchochmim
Sure I know what dementia is and how to recognize its onset.
You’ll see symptoms like semantic paraphrasia (“I hope they now go and take a look at the oranges, the oranges of that investigation”), phonemic paraphasia (“Betanyahu”, “bigly”), tangential speech (careening from one thought to the next in a parade of non sequiturs, frequently interrupting oneself, ), confusing people and generations (“Tim Apple”, “My father is German. Right? Was German. And born in a very wonderful place in Germany”), finding a MoCA test “very hard”, periodically struggling with basic mobility (like walking down a ramp or drinking a glass of water)…. The list goes on and on.
The occasional gaffe like using the word “million” instead of “thousand” is not a sign of dementia.