Lichen covered bricks in an old weathered wall on the way to school.
Hi. I'm Jon Jagger, director of software at Kosli.
I built cyber-dojo, the place teams practice programming.
Accu charity book giveaway
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhhD_17bjvj5hmmImD2KBa9lyiwgr5SdF7WEGKCW8dzkLayTYyn1rBEDRXkJw1YD-NLvuQXhyphenhyphenu2O6t1sDpLqeSdP2CSaKBzoumcMBV0Msw9Teyj-Sbs8qBqzk2oadNer-a-ofmq/s200/AccuBookGiveAway.jpg)
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Hi. I'm Jon Jagger, director of software at Kosli.
I built cyber-dojo, the place teams practice programming.