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![[Alan in acequia]](http://pics.livejournal.com/yarrowkat/pic/001rbbkk)
At our last work party, we built a bridge over our acequia. ![[info]](http://l-stat.livejournal.com/img/userinfo.gif) appleang took a spectacular set of photos that we've uploaded to our community blog.
I was "point" on this project, meaning it was my responsibility to do advance planning and be able to answer questions about what we were doing during the day.
Prior to our work party, I put together a timeline and a description of each phase of the work project. I had twice the number of people I estimated we'd need, and it took us twice as long as the estimate suggested.
I was off, then, by 4x my original estimate. I failed to account for one major task that came up on the actual work day, and several tasks took less time than I imagined. Almost all of the time overrun was underestimating how long it takes to dig. We started the process of estimating in part to collect data about what things we did poorly at estimating. Nom data.
All the same, we got our bridge built!
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