SPOILER WARNING: This article contains major spoilers for “Think Fast,” the latest episode of The Flash.
As it turns out, the Thinker wasn't exactly forthcoming about his plans for the Enlightenment. In "Think Fast," the latest episode of The Flash, he confessed his true goal to Barry. After he reboots the minds of all humanity, he hopes to eradicate emotion -- the mother of all conflict -- from them as well.
Even without his wife Marlize at his side, Clifford DeVoe continued his plans for Enlightenment in "Think Fast." He successfully infiltrated ARGUS and kidnapped the metahuman Fallout, who he used as a battery to power his satellites. Just as he launched them, though, Barry managed to destroy one. Without all five satellites, DeVoe would not have what he needed to cover the entire planet, thus preventing the Enlightenment.
After he destroyed the satellite, Barry turned to DeVoe and explained why the villain hadn't thought his plan through. After all, by resetting humanity's minds, they would forget everyone as well, including their friends and family. Though Barry hoped to get through to DeVoe with this, DeVoe scoffed at the idea. He revealed that was actually his goal. Without attachment to other people, human conflict would cease -- or so he believes. Then, once the Enlightenment takes hold, he can teach the people and lead them into a "better" existence.
With that, DeVoe returned to his pocket dimension and Barry ran back to STAR Labs. However, almost as soon as he got there, the facility's alarms began to blare. When Cisco attempted to shut them off, he realized the system had been taken over by none other than DeVoe. Worse, DeVoe was in the process of launching STAR Labs' satellite, which would allow the Enlightenment to continue.
Realizing this, Barry sped over to Reverse Flash's secret lab, but DeVoe had already barricaded himself. The Scarlet Speedster attempted to phase through the wall, but his attempts failed. Unable to stop him, the Enlightenment continued apace and the episode ended with a giant explosion, signalling the beginning of the end.
Team Flash may not feel the effects of the Enlightenment right away. As Marlize explained to Iris, Harry is experiencing the Enlightenment already, which means people will lose their intelligence the more they try to use it. Harry has been slowly losing his grasp on his mind for a few episodes now, indicating that it is a slow process. Hopefully, this will buy Team Flash enough time to reverse the effect and save mankind.
Airing Tuesdays at 8 p.m. ET/PT on The CW, The Flash stars Grant Gustin as Barry Allen, Carlos Valdes as Cisco Ramon, Danielle Panabaker as Caitlin Snow, Candice Patton as Iris West, Jesse L. Martin as Joe West, and Tom Cavanagh as Harry Wells, with guest appearances from Keiynan Lonsdale as Wally West and Hartley Sawyer as the Elongated Man.