Betweenness centrality

…is an indicator of a node’s centrality in a network. It is equal to the number of shortest paths from all vertices to all others that pass through that node. A node with high betweenness centrality has large influence to the transfer of items through the network, under the assumption that transfer follows shortest paths.

network hopping (deliberately)
riding a geometric plane
creating a boundary through sheer force of will
a moment seized; the interstitial
to quiet place


Couldn’t sleep last night because my system was still amped from racing.  I ate a little bit for dinner and then crashed early but had trouble falling asleep. My average HR was 174 – Screen Shot 2014-09-18 at 10.25.18 AMcompletely red-lined from the start. The finish of the race was so much fun. There was another runner on my heels for most of the race – I could hear him breathing right at my back – when we turned right off of Wildwood trail to Wild Cherry trail, he was literally on my heels. One thing that I’ve enjoyed in these races is running at high speed through technical terrain with other people in your personal space. Something I don’t experience on long solo runs.

There are a few sections of Wild Cherry where the trail has been shored up with 4×4’s along the sides with a packed gravel base; making for a relatively smooth surface. During the first race of the series, I used this section to recover slightly – and I was passed by a few people. Last night I dropped the hammer. In all 3 of those short sections I accelerated on the descent. And the other runner was still at my heels. When we exited the singletrack and turned onto Leif Erikson (fire road) I made the decision that there was no way he was going to pass me in the last quarter mile.  I cut the apex of every turn and stayed in front of him, not giving any runway for him to come around me. I saw the lights, cones and timing clock at the finish – and dropped the hammer again.

My HR spiked to 191 at the finish; a heart rate I haven’t seen since college. I wanted to lay down on the ground and curl up into a little ball, but then found a chair at the Nike demo tent, sat down, stared at the my feet in a haze and stopped my watch. I had no idea my HR could get that high any more – with the standard calc for finding Max HR, I should top out at in the mid 180’s.

As a bonus I won the Petzl headlamp in the raffle!

22nd overall (out of 78)
6th in my age group (out of 16)

An excellent night of racing!

*kudos to the runner pushing me. Thank you!

Portland trail series race #2 from Chris Rivard on Vimeo.

Like a good bonfire

When you do something, you should burn yourself up completely, like a good bonfire, leaving no trace of yourself.

– Shunryu Suzuki

Last Friday’s run sucked.

I felt so slow (and was in fact slow), I had a weird pain on the bottom of  my foot, I just wanted to stop… but I didn’t. I got through and finished. It never got any better … and then it was over.  I remembered that things can’t *always* get worse, at some point they have to reverse course – or end.

A concept that I’ve carried with me since swimming competitively in high school was the image of an hourglass. That’s what the pain in hard physical effort is like, the sand falls to the base of the ampoule – the constriction … but then it opens again – this is the passing through – and if you keep at it, you always pass through. Or you stop. No idea if there is a name for that point or not.

Today’s run was on-on. After it from the first step. If you want to run fast; you have to run fast. If you want to do anything really; and do it well, you have to do it well at least some of the time – otherwise you won’t know what “really well” feels like. If you always do something mediocre; you can’t expect to do it better than mediocre at some point in the future – it doesn’t work that way.

I was thinking a lot about how bad I felt on Friday’s run today and the counterintuitive truism that the tough experiences, the ones where you want to roll over and die, the ones that make you question why?… the ones where you feel more like *fleish mit oigen* than an actual human, are actually the experiences that have the most to teach.


Day 9

FT dad duty.

“So what do you guys want to do this weekend?”

“First go to the city and play in the fountain, then have lunch at elephants deli, then go to Mt. Hood and go skiing, then go camping.”


(we hiked up to the snow line last weekend and glissaded near magic mile. And I finally found where Alpine campground was – for some reason I thought it was lower down on T-line road (it’s actually near the top.))

IMG_1229In the 90’s in Portland last Saturday, 70’s at 2100 meters on Mt. Hood.


№ 2

10th in my age group; 29th overall (out of 98).

Long first climb, followed by a craycray downhill (I was galloping / jumping at one point). I recovered on the downhill, but then didn’t go anaerobic again on the flats (should have pushed harder), then went anaerobic again on the 2nd climb that had this annoying little kicker at the top — I was moving slowly right at the top – then recovered again on the rollers back along Wildwood trail… I let my mind wander and took my foot off the gas a little bit.

Finished in 47:00, then pulled my phone out of my waist belt and stopped Strava (Ambit 3 here on Friday!!!).

Fun first race. I have a suspicion I’m going to be wearing a headlamp for the last couple of races… I think it’s going to be dark at the end of October. We’ll see.

Came home and heated up some tortillas in the cast iron and ate 2 yummy fajita burritos covered in guac and salsa. Mmmmmm……so good. I picked up some green chile from whole foods this weekend, but was too lazy to take it out of the freezer and heat it up tonight. Cha cha cha.=======

Fun 2, although it was only a 5’er … there was some drooling.


This is a good read:

I read it through the context of software product design… I liked this quote:

This watchful, inner kind of creativity is not about making things but about experiencing life in a creative way; it’s a way of asserting your own presence amidst the much larger world of nature, and of finding significance in that wider world. By contrast, our current sense of creativity is almost entirely bound up with the making of stuff. If you have a creative imagination but don’t make anything, we regard that as a problem—we say that you’re “blocked.”

XOXO is coming to Portland next week (a conference about creative people making stuff). I went the first year, then was a little weirded out that you had to apply to be invited the second year.

On my ride home yesterday I passed an open warehouse door and inside were 2 massive steel structures with swings hanging in them. They’re outdoor structures for XO. Curious to find out where they end up.