Artificial intelligence pioneer says we need to start over

President Trump took to Twitter to address the terrorist attack in London Friday morning: "Another attack in London by a loser terrorist.These are sick and demented people who were in the sights of Scotland Yard. Must be proactive!... Loser terrorists must be dealt with in a much tougher manner.The internet is their main recruitment tool which we must cut off & use better!... The travel ban into the United States should be far larger, tougher and more specific-but stupidly, that would not be politically correct!... We have made more progress in the last nine months against ISIS than the Obama Administration has made in 8 years.Must be proactive & nasty!"Why it matters: Trump believes the attack in London this morning could have been avoided if government was much tougher in its crackdown on terrorism, such as through his proposed travel ban, even if it means not being "politically correct."