Darwin’s lesson for today, kiddies, is called “The Path of Least Resistance.” He notes what you will learn is, indeed, shocking. He begins.
Contrary to popular belief, electricity takes all paths available in inverse proportion to the impedance of the paths. The magnitude of the current flowing in a path depends on the path’s voltage and impedance. The lower the impedance (assuming voltage remains constant), the greater the current. Conversely, the higher the impedance (assuming voltage remains constant), the lower the current.
Electrons take all available paths, and one of those paths is your 1000-ohm body.