Question

why it is said jim was only human​

Answer 1

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Bringing water from the town pump had always been hateful work in Tom's eyes, before, but now it did not strike him so. He remembered that there was company at the pump. White, mulatto, and negro boys and girls were always there waiting their turns, resting, trading playthings, quarrelling, fighting, skylarking. And he remembered that although the pump was only a hundred and fifty yards off, Jim never got back with a bucket of water under an hour—and even then somebody generally had to go after him.

Answer 2

Bringing water from the town pump had always been hateful work in Tom's eyes, before, but now it did not strike him so. He remembered that there was company at the pump. White, mulatto, and negro boys and girls were always there waiting their turns, resting, trading playthings, quarrelling, fighting, skylarking. And he remembered that although the pump was only a hundred and fifty yards off, Jim never got back with a bucket of water under an hour—and even then somebody generally had to go after him.