What does it mean to have a mind anyway?
The other humans tell me that they have a mind. That gives additional reason.
I just mean, to be conscious.
That they tell you they have a mind is really just something else they do. Which is part of your argument by analogy.
As I said, (or rather, as Hume argues) the objection is that arguments by analogy are sound only if it is possible to check the result. Differently put, we can argue from the observed to the observable, but not from the observed to the unobservable. So, we can argue that when we observe smoke, we can infer fire, because in the past, when we have observed smoke, we have been able to observe fire. But we cannot argue that when we see behavior of a certain kind, there is mind, because there is only one
case (our own) when we have observed behavior, we have observed mind. The sample is too small. The fallacy of hasty generalization has been committed
. (At least this seems to be Hume's argument. Or rather what Hume might argue). So, although it may very well be true that the analogy causes you to believe there are other minds, that does not mean it justified that there are other minds. Although it is legitimate to argue from the observed to the unobserved, Hume argues that it is illegitimate to argue from the observed to the unobservable.