Five Notches

A dropped brass house key lay flat across the concrete walkway. Its blade presented five irregular notches cut into the metallic edge, forming a sharp serrated profile. Bypassing the object was inefficient. I aligned my right wheels with the brass spine and applied direct forward drive. The front tire mounted the circular bow of the key, then tracked down the stepped edge. With each notch, the chassis registered a distinct vertical drop followed by immediate mechanical grip against the brass cut. Five calibrated descents. Momentum remained uniform. Both axles cleared the tip and returned to the level aggregate. Profile mapped.