Last month, Joe Biden got some practical campaign advice from a maestro: Keep speeches, interviews, and tweets short and crisp, former president Barack Obama told the presumptive Democratic nominee, according to The New York Times. With President Trump imploding daily, there’s little else to add except stay cool, drink plenty of water, and avoid mistakes like saying 120 million Americans have died from COVID-19, as Biden recently did, before quickly correcting himself. **SNIP** So now it’s time for the Trump campaign to hit Biden with accusations of dementia. An ad run by a pro-Trump PAC raises the question: “Does Joe...