https://mehraandsons.com/ A father who wrote LISP in 1991 and two sons who grew up with AI, building the same company and arguing about it in public. en-in https://mehraandsons.com/kitne-prompts-the/ https://mehraandsons.com/kitne-prompts-the/ Sat, 07 Nov 2026 03:00:00 +0000 Old dog. New tricks. Two hundred prompts. Sachin Mehra on going back to building at 54, with AI.