A Swedish hospital has banned Crocs (plastic clogs) because they build up static charges that zetz the delicate medical instruments:
Blekinge hospital in southern Sweden suspects the slip-on shoes, made by US firm Crocs Inc, are to blame for at least three incidents in which respirators and other machines malfunctioned. The mishaps caused no injuries.Hospital spokesman Bjorn Lofqvist said staff wearing the clogs could turn into “a cloud of lighting” because of the static electricity.
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Besides, those are ugly.