In life, the purchase of a new car, or house, invokes feelings of excitement, potential value and sustainability. Being new is positive thing, with infinite possibility.
Whereas, in the clinical research industry, a new/inexperienced employee may invoke feelings of unease, and the investment of critical time and resources without prospective return. Wonderful possibility is not anticipated, rather, ability is questioned. This doubt forces the choice of experience over potential, on what is comfortable/predictable (such as the requisite two years of CRA experience for an entry level CRA position) over the unknown.