At Fortune's Brainstorm Tech, broker Ryan Serhant explained how a chatbot nearly blew up a $50 million NYC penthouse sale—and why he says AI still can't replace a human in high-stakes deals.

At Fortune's Brainstorm Tech, broker Ryan Serhant explained how a chatbot nearly blew up a $50 million NYC penthouse sale—and why he says AI still can't replace a human in…

At Fortune Brainstorm Tech, broker Ryan Serhant explained how a chatbot nearly blew up a $50 million NYC penthouse sale—and why AI still can’t replace a human in high-stakes deals.