Which is of a lesser evil? thumb sucking or sucking on pacificer? my son (3mths old) has a tendency to suck his thumbs.. so whenever he does so, I will let him suck on the pacificer instead..

I would think pacifier. The thumb is always there so it may be harder to wean the baby off from sucking. Also as the kid gets older, they tend to touch everywhere which may result in them bringing the germs to their mouth if hands are not washed yet.