Look at Adam and Eve in the garden, in the infancy of our race. Note that even though they were without sin, they could not see the harvest in the seed.
Innocence is ripe for deception precisely because it does not look to consequences. It does not look to consequences because it has not experienced any bad consequences, and so cannot imagine disaster.
Innocence is not wisdom, it is simply innocence. You must pass from innocence to become wise, but this is not to imply you must sin in order to be wise. One of the demonic parodies of spiritual truth is the commonplace that experience makes you wise. It does not.
Deception is not itself sin. Deception is possible for the innocent, and probable for the corrupt, but for different reasons.