Well -- not all women and young girls are dumb, just as not all young men are Cads and Users and Players.
Young Women just need to understand -- when they date a "Player", even just for "fun", they are (in effect) rewarding and reinforcing his behavior.
They may be "just having fun", but the effect is to reward a "Player" for his behavior.
If young women consistently SHUN the Bad Boys, the Players, and the Users... there will be less of them.
Sub-Species which cannot propagate, tend to Die Out.
I just know too many, "dumb girls." I went to highschool with a gal who married Richard Ramirez, the "Night Stalker." I just have known too many who fall for the "exciting" males who are often times the more destructive.
Fortunately, I did not fall for that type. I found that the nice quiet men that have inner strength are the best. Out of our relationship, my husband has grown, and become very talkative, and very much a leader.
I am glad of my life choices, my children are well off, and it works for me.