Dan Bricklin on Software That Lasts 200 Years

Lansdowne writes "Dan Bricklin, author of VisiCalc, has written a great new essay identifying a need for software that needs to last for decades or even centuries without replacement. Neither prepackaged nor custom-written software is fully able to meet the need, and he identifies how attributes of open source might help to produce long-lasting 'Societal Infrastructure Software'."