Tech gives us replacements for relationships, says Scott Galloway. ‘And in the short term it fills a void. But it’s empty calories, and I think you end up more depressed.’ Photo: John Scrivener for The Wall Street JournalScott Galloway, a founder of companies, board member of others, business-school professor and author, is outspoken in his criticism of today’s Big Tech-driven society. At the recent Wall Street Journal CEO Summit in London, he shared some of his views, along with an array of data points, in a wide-ranging, animated talk with Nikki Waller, coverage chief for life and work at The Wall Street Journal. Edited excerpts follow.

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