How many blondes does it take to change a light bulb?
An answer to this question would require more information than is provided- including, but not in any means limited to the height of the light fixture with the faulty bulb, any special characteristics of the light fixture in question that perhaps requires mechanical know-how beyond one blonde's abilities, etc. In addition, the level of credit due to any blondes at work in the manufacture of replacement light bulbs remains in question. Finally, blondes are pretty stupid.