From the 2012 Concurs de Castells, a human tower-building competition in Tarragona, Spain, watch this video by photographer David Oliete. David also took photos.
A long tradition in the region, castells began at the end of the 18th century. The sport has rules, techniques, and team responsibilities to guard safety and success. The pinya or base is made of a few hundred people that can catch anyone who falls, and the tower itself has a variety of different formations. The top three levels are the pom de dalt, made up of children in helmets.
While the video above doesn’t show some of the more harrowing challenges, this video by Mike Randolph in 2010 captures why safety and teamwork are so important:
This video demonstrates how to tie a Figure 8 knot, one of the Basic 8 knots that lead to a huge catalog of useful tying skills for boating, climbing, scouting, search and rescue, and more.
The Figure 8 is a stopper knot — it prevents the end of a rope sliding through a pulley or it can be used to add security to another knot. It is relatively easy to undo, is preferred to the Overhand Knot, but is not as secure as the Double Overhand.
These videos are from AnimatedKnots.com, where they believe that it’s “Better to know a knot and not need it, than need a knot and not know it.” And don’t forget, safety first!
Elderly people with Alzheimer’s Disease or dementia sometimes forget to use the manual brakes on their wheelchairs, which then fall out from under them when they try to stand or sit. When this was brought to the attention of crop farmer Jerry Ford, he decided to do something about it. His invention is a rather clever automatic brake system for manual wheelchairs. It’s even designed in a way that still allows the wheelchair to fold up for transport.
This portrait is just one from a series of videos and photographs about inventors by photographer David Friedman.