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It is a self comforting device and recommended by AAP: http://goo.gl/ZnR17 http://goo.gl/ZnR17

• anigbrowl 13y ago
  Most babies come with perfectly serviceable thumbs for this purpose.
  • rayiner 13y ago
    Babies can't figure out how to suck their thumbs right off the bat. Mine took months to master it.
    • anigbrowl 13y ago
      True, though some start in the womb; it is a semi-instinctual behavior. I favor it because I think it promotes cognitive development, whereas a pacifier does not. Admittedly the calculus of this looks a bit different when the baby wakes up at 4am, after finally going to sleep at 2am.
• deleted 13y ago
  [deleted]