It certainly is, and I've linked to several of Rob Walling (http://www.softwarebyrob.com/ http://www.softwarebyrob.com/) 's posts in the past. Rob is a great ex

It certainly is, and I've linked to several of Rob Walling (http://www.softwarebyrob.com/ http://www.softwarebyrob.com/) 's posts in the past. Rob is a great example of a one-man-army type of entrepreneur. I know a few others who are successfully applying this model. Re: parallelising, obviously you can only focus on one thing at a time, but many ideas take time to build out - as in, waiting time. If you've got control over your time, why not spend that waiting time testing out other ideas? In practice, I think most people who are still at the validation stage will in fact parallelise part of the process.