spar

It is possible to spar, disagree with, criticize, part ways etc amicably and all the while being nice. I've seen people like that, it is not an easy skill to learn though

There's nobody to spar with on the whole picture, you have to make decisions with far reaching consequences on your own.

My co-founder and I are both techies who care about business, so we spar often. On the far reaching consequences side, I didn't realize how important the choices we made in the first month were.

With boxing gloves, especially the 16oz ones that most people spar with, you can take many, many hits to the head with no visible damage. The extra padding isn't protecting your head, it's protecting the puncher's fists.

With a clear Iceland spar crystal 1 to 2 inches on a side, the direction of the sun can be pinpointed to within a few degrees. You can also get the same effect using a piece of cellophane and the lens of a pair op polarized sunglasses.

We're getting really offtopic here however, HN is not the place to spar over the Israel\\Palestine conflict. There's plenty of places on the web you can engage in this if you want, but be warned that doing so will end up resolving nothing and will leave you frustrated and angry.

And their politicians love to verbally spar. Here politicians passive-aggressively don't clap during state of the union speeches.

They're all wrapped up in some political hyperbole that allows the politicians on the right and left to spar without actually doing anything to make our nation more solvent.

Intelligences may spar at each other, but brute biology won't have a seat at the table anymore. And intelligences at least have a chance to compromise at something less that all out war, which is all brute biology has ever known and all it can ever know.

My favorite way to learn about someone is to physically spar them. You learn a lot about a person -- how aggressive or defensive they are, their cleverness or ability to improvise creative solutions, how they respond when backed into a corner, and how they react when given control over the ring.

While the researchers seem to have been able to prove that the found crystal is Iceland spar, it was recovered from a Elizabethan shipwreck in the English channel from 1592, centuries after the magnetic compass started being used in Europe. While other articles on the topic claim that they suggest that sunstones would have been destroyed in Viking burials, I think that the lack of similar crystals from known Viking ruins is troublesome.