Originally Posted by mnm4334
in episode 4 we have three locks on the island at the same time.
Lock 1. Locke in Ajira people box.
Locke 2. Locke that kills Jacob
Locke 3. Locke on the outrigger getting shot at by the ajira people.
In Episode 4,
Locke had not even left the island yet,so he couldn't have been in the Ajira box.
Locke did not kill Jacob,Ben did and that was way later in the finale ep 16.
Locke 3 is the only Locke we see in this episode
But if you mean at the time of that incident;
the Locke that flashed to the future on the outrigger is the same Locke who flashes back,then goes off island and dies.
So there would only be 2 Locke's altogether in the end.
But if one of them is fake,then that leaves us with only one Locke.