This is a good exercise in estimating workload. While the article says one week is insufficient to make something meaningful, I've found personally that you ca

This is a good exercise in estimating workload. While the article says one week is insufficient to make something meaningful, I've found personally that you can write useful software even in a single day, as long as your feature scope is finely targeted. Actual real life needs of real people are also more interesting to write software for.