Maybe dementia, or maybe it was at birth

Let's keep it simple, shall we?

If Donald Trump were your grandpa, you'd be having family meetings about how to protect him from himself. Assisted living? A nursing home? Or would it be necessary to have the old man confined to a psychiatric clinic?

Over the last couple of weeks alone, the Republican front-runner for the presidency has made a series of bizarre pronouncements that would land an ordin…