India, Jan. 6 -- Zomato CEO Deepinder Goyal was seen wearing his Temple device in a recent appearance on Raj Shamani's podcast, reigniting the conversation around his brain flow experiment. However, a senior doctor from AIIMS Delhi has dismissed the device as a "fancy toy for billionaires". In November last year, Goyal shared what he called the "Gravity Aging Hypothesis", suggesting that gravity might slowly reduce blood flow to the brain over a lifetime, which could contribute to ageing. In December, he hinted that the device, which he has named Temple, would soon be available to the public. Dr Suvrankar Datta, an AI researcher and radiologist with clinical training from AIIMS Delhi, has dismissed the device worn by Goyal as unscientific. Goyal's Gravity Aging Hypothesis had also met with similar criticism from several doctors, including Dr Cyriac Philips aka The Liver Doc. Responding to a viral pic of Goyal from the podcast, Dr Datta wrote on social media, "This device currently has zero scientific standing as a useful device. Do not waste your hard-earned money to buy fancy toys that billionaires can afford to waste money on." Goyal did not respond to the comments till the time of going to press. htc...