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Following on what John observed...the difference in the tree climbing gear we have today compared to 2000? Stunning amount of innovations and changes in the way many of us do the work. I'd bet there's been more changes in the last 25 years than in the 150 years before that.

While this is certainly so, I was more wondering if say 20kN delivered all at once to an object might break that object when the same 20kN delivered in a slow buildup to that load would not. I don't know at all.

I've always wondered if shock loading breaks things at different levels than the slow increase of load that break tests seem to commonly use. Anyone know about that?

That is excellent info, @Knotorious . Best thing on the subject that I've seen. Thanks.

Unintended consequences. We humans seem to excel in finding them.

That pruning machine was developed quite a long time ago...iirc in the 1990's. The purpose of the pruning was to allow young second growth stands to produce clear wood (with a higher value) much sooner than would occur from natural branch dieback. I saw one demoed, but I never heard much of...

That is pretty well stuck.

Bullseye.

They are unusual, for sure.

What the heck kind of back cut was that?

No little bit of weight to deal with in that mess.

Not how most would go at it, but it was cleanly done.

Made my knees cringe to watch some of those drops. He is good.

Only sketch if you have an outwardly opening crack. Any crack that closes outward or downward, it was bombproof. He cut the ends on a slightish angle, so one could fix them pretty nicely. But of course, as many things we did back then, it was highly suspect :).

Back in the day circa 1970ish, I recall a rock climber I was friends with using a few pieces of varying lengths of 2 inch diameter galvanized steel pipe he bought at the hardware store as crack jam protection points. He had maybe a 3 inch (which put it at the upper edge of what we could do with...

One person's interesting change in direction can be another person's train wreck :D.

No doubt :).

Long on the luck.

Stig suffered that unfortunate accident. Cone harvesting, if I recall correctly. I believe he says it cured him of free climbing :).

Not yet, anyway. But gravity never sleeps...if he keeps up as he is going, that day will most likely come.