In the debate over how President Joe Biden and former President Donald Trump are aging, two experts agree: “It’s a tale of two brains.” Dr. Harry Segal and Dr. John Gartner, both longtime psychology experts, came to the conclusion Friday on their podcast “Shrinking Trump.” Contrary to what MAGA world would have many believe following Biden’s disastrous debate performance in Atlanta, Segal started the show off by throwing a curveball: It’s Trump who has shown early signs of dementia, Segal said, citing Trump’s language, tangential thinking, and physical gait. Want more breaking political news? …