Today, technology is so advanced that it's hard to know which old videos are real and which were made by computers. A while back, if a video looked super smooth and shiny, it was probably made by a computer. But now, computer programmers are adding flaws to old videos to make them look more real. Old videos usually have flaws like being grainy or having static, which proves they're real. However, computers can now copy these flaws to make fake old videos.