They have comparatively lesser chances to lie to those who talks continuously.
2. The attitude of doing more intercourse(x) is an implication to one's Fitness for survival
through generations by transmitting their code(character) to copy into
3. When it comes to proposing to an opposite sex , the more you convey the
better the chances you get and proportionally higher rate of success.
May be this is one of the reasons why people with Tongue can influence
more than those who with just brains.