A special guest greets us when we walk into Zerodha’s office. She walks around the work floor area, sits next to us even as we wait for Nithin Kamath to join us. She wags her tail and walks away as soon as Kamath settles for the shoot. A staff member tells her "Zero, eekade ba" (Zero, come this side…).Kamath, the founder of Zerodha, named the pet 'Zero' when he found her in the garage and took her in as a member. Zero comes across as...