Even some of the most powerful tech companies start out tiny, with a young innovator daydreaming about creating the next big thing. As today’s tech firms receive increased moral scrutiny, it raises a question about tomorrow’s: Is that young person thinking about the tremendous ethical responsibility they’d be taking on if their dream comes true?Greg Epstein, the recently appointed humanist chaplain at MIT, sees his new role as key to helping such entrepreneurial students think through the ethical ramifications of their work.