At a workshop hosted through the Air Force's military university on Aug. 26 in Montgomery, Alabama, students were shown a video of President Joe Biden addressing the UN while effortlessly switching between five languages including Mandarin and Russian. While Thomas Jefferson and John Quincy Adams were fluent in several languages, Biden, like most U.S. presidents, is only known to speak English. The video was a piece of synthetic media, more commonly known as a "deepfake." Created using a combination of machine learning and artificial intelligence, deepfakes are hyperrealistic videos that replace one person's likeness with that of another, or appear to show them doing something they never did. And as the technology improves, they get harder to detect.

At a workshop hosted through the Air Force's military university on Aug. 26 in Montgomery, Alabama, students were shown a video of President Joe Biden addressing the UN while effortlessly switching between five languages including Mandarin and Russian. While Thomas Jefferson and John Quincy Adams were fluent in several languages, Biden, like most U.S. presidents, is only known to speak English. The video was a piece of synthetic media, more commonly known as a "deepfake." Created using a combination of machine learning and artificial intelligence, deepfakes are hyperrealistic videos that replace one person's likeness with that of another, or appear to show them doing something they never did. And as the technology improves, they get harder to detect.

The deepfake technology this TikToker is using to impersonate Tom Cruise, apparently (via The Daily Beast). The deeptomcruise account appears to feature someone who's pretending to be the famous actor, and the impression isn't just jaw-dropping because of how well the person replicates Cruise's famous laugh. How can you tell it's not actually Tom Cruise using some sort of strange Twitter name? First, his voice is close, but it's not quite there, especially since the lip-syncing is a tiny bit off at some points. You can hear what the real Cruise sounds like in this video (unless, of course, James Corden also deepfaked him in).