I don’t believe you. Any time you’re looking at an apartment or house and don’t have a floorplan or a 10’+ tape measure, you walk the length of each side of a room side heel-and-toe to get a rough idea. The deviation of the length of your foot from 12 inches isn’t material in this situation.
And if you’re really struggling with this, a room with a 10’ side would be about ten small steps across, a bit more than three strides.
I know intuitively how long my foot is and how long my stride is. I don’t know intuitively what the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second, where the second is defined by a hyperfine transition frequency of caesium.
I don’t believe you. Any time you’re looking at an apartment or house and don’t have a floorplan or a 10’+ tape measure, you walk the length of each side of a room side heel-and-toe to get a rough idea. The deviation of the length of your foot from 12 inches isn’t material in this situation.
And if you’re really struggling with this, a room with a 10’ side would be about ten small steps across, a bit more than three strides.
I know intuitively how long my foot is and how long my stride is. I don’t know intuitively what the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second, where the second is defined by a hyperfine transition frequency of caesium.