Agreed. One of the most interesting and challenging projects I worked on was a stratigraphic suite of programs used by a mining company. The programs had been

Agreed. One of the most interesting and challenging projects I worked on was a stratigraphic suite of programs used by a mining company. The programs had been written over a period of about 15-18 years by numerous persons of varying knowledge and ability. In doing maintenance coding and writing the missing documentation I learnt heaps about geology and mining practices.