Is he right? I'm not so sure. Last week, Veritasium released a video presenting a thought experiment involving a battery powered circuit connect to a lightbulb with wires extending in 1/2 a lightsecond in each direction. Suggesting that the lightbulb would turn on at a time dictated by the distance between the battery and the lamp, ignoring the length of the wires. Video here: https://www.youtube.com/watch?v=bHIhgxav9LY Are you interested in launching a start up company from your research? Check out my Skillshare course on "How to Start A Company From Your Research": https://skl.sh/2QiD3fS A few people have asked so I've added the info below. Some/all of these may be affiliate links. If you make a purchase it doesn't cost you anything extra, but a percentage of the sale will help support this channel and my work to bringing entrepreneurship into science. My gear: My camera : https://amzn.to/3ed5Xac My lens: https://amzn.to/3xIAZyA My lav: https://amzn.to/2SeE20Y and https://amzn.to/3nK33wA My mic: https://amzn.to/3gUYYEv