Statistically,  I suppose yes they must.  Even so,  are they close enough to even reach us,  advanced enough to do so,  and even then would they really care enough to want to do so?

Well according to Edgar Mitchell the answer to all of those would be yes .  Which best the question,  if this is indeed the case then have any of our technological advances been borrowed from them?  

As an engineer,  what would it be like to be able to discuss things with a technologically advanced race?