Ah, thank you. This is how I interpret that: because of the nature of the different materials involved in the construction of a pool and surrounding deck, and the difference in electrical resistance of those materials, a stray current can introduce different electrical potentials around the pool, and so depending on where you are in the pool, and where the bonding points are, you could still feel a shock? Which would mean that while a bonding grid can significantly reduce the danger of stray currents, it can't eliminate 100% you feeling a shock. Something like that?A bonding grid can only equalize the voltage everywhere if there's no current flowing.
If current is flowing, the voltage will be different at different places depending on the current and resistance