WARREN BUFFETT WAS ASKED WHAT THE DUMBEST TRADE HE EVER MADE WAS“It was a stock in a textile company. They’d been going downhill for years.”He was buying shares cheap, planning to flip them on the next mill closure. Then the CEO, Mr. Stanton, promised to tender at $11.50.Buffett agreed. Shook on it.Weeks later, the tender offer arrived in the mail. The price: $11.375.“He stiffed me for an eighth.”“If that letter had come through at $11.50, I would’ve turned in my stock. But this made me mad. So