I thought about scale – how have we measured the world around us? And is the way we’ve chosen explanatory and clear enough for anyone on earth or beyond be able to understand it?
I looked at the Golden Record that was sent to space in 1977 (with photographs, greetings, sounds on Earth and 90 minutes of music) where it’s assumed that the concept of unit is universal. So I used two units as the basic element that allows to determine half of the line.