[The unforeseen aspects of expertise or the proper use of ones's nose and lips].

On the basis of two expert evaluations, the author first sets out a few general principles needed to guide the expert during his mission. He then describes the peculiar features of the two examples chosen, both of which, in his opinion, justify a valuation far exceeding the standard compensation for the damage sustained by the victims, due to their occupation: one is a customs officer in a major international airport, the other is a trumpeter in a famous philharmonic orchestra. As a conclusion, the author emphasizes the necessity to thoroughly examine any wounded or ill patient prior to deciding to operate them.