Problems....
When you are a photoagrapher there are many problems that could go wrong let me list some. Say you take pictures for a wedding if you mess that up it's only a one time thing and won't happen again and you need to get just perfect photos. Also say your taking a family photo with little babie and you have a very bright flash on your camerait hits the babies eyes and bam! The thing starts crying like crazy then you have a problem. See there are many problems that happen on the job many need to be fixed.