Should I lock My Rate Today?

This question was just asked today of us from a buyer. Do I lock now or should I wait? Will rates go down next week? WOW the million dollar question. Of course I'm not the sharpest tool in the shed, I am just a Realtor. I guess it all depends if you are a gambler Mr. buyer? Do you want to throw the dice until 2 days before closing or do you lock 30 or so days out? My answer to him- Given the uncertainty of the economy, housing, unemployment, and a million other factors- LOCK NOW !! We only know what today will bring !