What I find most interesting is that the dawn of anatomically modern humans is actually visible on the 4.54 billion year timeline of the Earth. 200,000 years out of 4.54 billion might only be about 1/23000 of our planet's history, but that's also a whole 1/23000!
If the period of time that humans have been around was drawn to scale, it wouldn't really be visible.
If we assume that the width of the bar for the life of the earth is 1500 pixels (the width changes depending on the window size), then the period we have been around will be around 0.06 pixels wide (1500/23000 = 0.065). Much closer to zero pixels than one pixel.
