I’ve to look where there is light

In Bern, the capital city of Switzerland, there lived the popular character known as Dällebach Kari (died 1931). Even so his time is almost 80 years past, he is still remembered for many things, one of which was his pointed humor. Here is one anectode in the category practical philosophy:

One night two cops came across Dällebach Kari searching for something in the light of a street lamp. “Hey, Kari, what are you searching for”, they inquired. “I lost my chewing gum over there”, Dällebach Kari replied pointing towards a dark corner on the other side of a bridge. The two policemen were a bit lost and scratching their heads they wondered, “well, why are you searching here, then?”. “Because, obviously, I have to search where there is light”, was the reply.

So: can you spot the relevance to software projects?