> OK, so then, after more thinking and doing some research on extension cords, you think it would be feasible to use a vacuum cleaner to clean the outdoors. You

> OK, so then, after more thinking and doing some research on extension cords, you think it would be feasible to use a vacuum cleaner to clean the outdoors. You look in the literature, and it turns out that nobody's ever thought of doing that! You proudly tell this idea to your advisor, but they do some back of the envelope calculations that you don't really understand and tell you that vacuuming the outdoors is unlikely to be very useful. Something about how a vacuum cleaner is too small to handle the outdoors and that we already know about other tools that are much better equipped for cleaning streets and such. http://www.travelblog.org/Photos/6689183 http://www.travelblog.org/Photos/6689183 https://lh3.ggpht.com/-AnVOwQYTNos/TcQqcMYp-cI/AAAAAAAAAEw/2rOYWsCQC4Y/s320/montreal+street+cleaners.jpg https://lh3.ggpht.com/-AnVOwQYTNos/TcQqcMYp-cI/AAAAAAAAAEw/2... http://www.fotopedia.com/items/4tg1q9r7sq5v1-yq8FXc45gIE http://www.fotopedia.com/items/4tg1q9r7sq5v1-yq8FXc45gIE http://pdf.directindustry.com/pdf/johnston-madvac/lt500-high-capacity-mobile-vacuum/26093-137061.html http://pdf.directindustry.com/pdf/johnston-madvac/lt500-high...