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 th

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.