Malcolm-Jamal Warner’s passing hit me harder than I could have anticipated it would. I had to dig through my own feelings to figure out why. When “The Cosby Show” — and Warner’s character, Theo Huxtable — debuted on NBC on September 20, 1984, Warner was only 14. “The Cosby Show,” which depicted an upper middle-class Black family living in Brooklyn Heights, was a ground-breaking show.