the strange road crossing mystery
there was a strange shadow at this window, so i took this photo to show you. when i took it someone walked past, but even though their legs were the most movey part of their body, their feet are the only parts which have shown up.
The whole body of the person is moving.
Feet and ankles are the ONLY bits that are stopped for around 50% of the time, and hence have shown up.
Nice impression!
makes sense, thank you rascle.