Tom Selleck wrote his new memoir entirely by hand. The 79-year-old actor is releasing a memoir called ‘You Never Know’, and Tom has revealed that he wrote the book by hand, because he “can’t think in front of a keyboard”. Tom – who previously played private investigator Thomas Magnum in the hit TV series ‘Magnum, P.I.’ – told Town and Country magazine: “I’ve always written that way, and it’s the only way I know how to write. “I can’t think in front of a keyboard. “It’s like I drive ’em nuts on ‘Blue Bloods’ because I said, ‘No, you have to send me scripts. I need to see the paper.’ I don’t rea…