Like it or loathe it, being an entrepreneur means a lot of talking. Whether it's chatting at networking events, pitching to investors, selling your product to customers or explaining it to journalists, talking is a big part of what you sign up for. "Talking is the way you represent your brand; it's the way you build credibility in what you're doing," says Danish Dhamani, co-founder of Orai, an app that claims to make you a better public speaker. But talking – or rather, public speaking – wasn't something that came naturally to either Dhamani or business partner Paritosh Gupta. The pair met in their first year at university in Philadelphia, where they are still based.

Bill Gates, Elon Musk, and Stephen Hawking all have something in common: All three have gone on the record sharing their concerns and fears about artificial intelligence and robotics. While these technologies hold a great deal of promise, and will have a real impact on our future, it's important for us to understand the ramifications they could have for all of us, particularly in terms of labor. My first big concern about AI was recently highlighted in a New York Times piece by John Markoff, who wrote that while AI has great potential for good, it could also be abused by criminals who might use it for their nefarious goals. The growing sophistication of computer criminals can be seen in the evolution of attack tools like the widely used malicious program known as Blackshades, according to Mr. Goodman. The author of the program, a Swedish national, was convicted last year in the United States.