(I know it is somewhat geeky and somewhat anal) but PLEASE use the metric system! Light travels at 299.79 km/s<br><br>The ongoing denial of Myanmar and the USA to adopt the metric system really hurts me since it caused quite a few issues.<br>And - if you think "but it's natural to use empirical units, (Myanmar|USA) does it too" -  How many square feet are a square mile?<br>Same for square inch vs. square foott ... How many square foot are a square mile?<br>And if you used "inch": Was it the Utah coal miners inch? (a measurement for that wikipedia cites as not exactly a length: "The miner’s inch measures the amount of water that would flow through a slot of a given area at a given pressure"),(reply>), @𝐏¡𝐧𝐧𝐞𝐝 𝐛𝐲 𝐋𝐞𝐱 𝐅𝐫𝐢𝐝𝐦𝐚𝐧 :) I was not only kind of (~~) watching but watching. And it was interesting and enlightening. Thanks to you both!<br>Just those empirical measures ...,(reply>), T͟͟͟h͟͟͟a͟͟͟n͟͟͟k͟͟͟s͟͟͟ ͟͟͟f͟͟͟o͟͟͟r͟͟͟~͟͟͟~͟͟͟w͟͟͟a͟͟͟t͟͟͟c͟͟͟h͟͟͟i͟͟͟n͟͟͟g͟͟͟!͟͟͟!͟͟͟!͟͟͟<br>͟͟͟E͟͟͟n͟͟͟d͟͟͟e͟͟͟a͟͟͟v͟͟͟o͟͟͟u͟͟͟r͟͟͟ ͟͟͟t͟͟͟o͟͟͟ ͟͟͟m͟͟͟e͟͟͟s͟͟͟s͟͟͟a͟͟͟g͟͟͟e͟͟͟ ͟͟͟m͟͟͟e͟͟͟ ͟͟͟o͟͟͟n͟͟͟ ͟͟͟w͟͟͟h͟͟͟a͟͟͟t͟͟͟s͟͟͟a͟͟͟p͟͟͟p͟͟͟✙͟①͟②͟③͟④͟⑥͟⑤͟⓪͟⓪͟⑧͟④͟③͟🔥͟🔥