Article continues below advertisementDonald Trump's cognitive state is under fire once again as he posted two Truth Social tweets about Artificial Intelligence that were very similar in their messaging just 40 minutes apart.The 79-year-old president's repeat posts went down on November 18, sparking concerns about his mental capacity. Article continues below advertisementSource: megaDonald Trump tweeted out two similar-sounding posts on November 18.His first tweet was penned at 4:56 p.m. and said: "Investment in AI is helping to make the U.S.