Prospects Versus Proven Talent

I had lunch with my brother today & he mentioned that Tony Mazz is not sold on the Red Sox keeping more of their prized prospects versus trading them for proven big league talent. Example - Blake Swihart or Mookie Betts or Henry Owens for Cole Hamels. This is an argument that you can't win until you see how both the prospects & the proven talent mature over time. Prospects keep your team young & enthusiastic, have the potential to be impact players at a young age while under club control for several years & let's not forget that these prospects play at bargain prices. Proven talent usually comes with high costs & deals of multiple years attached, so you run the risk of paying for past performance. I guess Mazz indicated that he had had enough of the prospect experience last year with Middlebrooks, JBJ & Bogaerts contributing to a last place finish by the Sox. It doesn't mean, however, that you abandon ship & trade the future for the here & now. The Sox management is counting on a revamped offense to offset the lack of a #1 starter in the rotation. Only time will tell if the Sox management or Mazz is right.