Warriors' Thompson excels by living in present[...] it's said that jokes always carry some truth."I'm guessing Klay (Thompson) doesn't know" that we've lost 31 in a row in San Antonio, Warriors head coach Steve Kerr said last week."Yeah, but he also might not know that you're on a 12-game winning streak," a reporter suggested.The only thing that matters is tonight.Thompson lives in the present, unless his present is a missed shot.[...] he lives in some alternate moment just beyond the now, when he gets to shoot again and the ball goes through the hoop.After making only 5 of 21 shots from the floor and 1 of 8 shots from three-point range while averaging 6.5 points in back-to-back road losses, Thompson had 26 points Thursday in the team's return to Oracle Arena.If I want to be a great player, I can't have letdowns like that, mentally.Thompson works on his shot every day.Thompson has 767 three-pointers with three games to play in his fourth season — that's 123 more threes than Curry (or any other player in NBA history) had at this point in his career.Thompson is on pace to average 21.3 points per game on 43 percent three-point shooting.Rusty Simmons is a San Francisco Chronicle...