Old Car and Bike rambling

I witnessed a friend take a high side around a curve last week during a ride in the curvy mountain roads about 30 minutes from work during a lunch time ride. We weren't traveling super fast and I'm still not quite sure how it happened but the repurcussions of that 1 second crash are still being felt 1 week later. I was the 3rd and last rider in our group on my cb750, the 2nd rider borrowed my wife's 2009 Kawasaki Vulcan 500 and the 1st rider was on his Yamaha FZ6. Over the last week all 3 of us reviewed the accident in our minds many hundreds of times. We failed to properly manage the risk on an activity that is already risky. he was riding an unfamiliar bike the injured rider did not wear a jacket or gloves he was on an unfamiliar road it was his first ride of the season he was the youngest of the 3 riders Although the bike was totalled and my friend was badly injured, he luckily will heal in a few months and can already walk around. It could have been much worse because h