Hi, Thanks for the fascinating and informative thread. I hope it is still active for questions, because I have an apparently simple (even naive) one that continues to bug me. That is, whilst I understand the concept of tech medians, I am frustrated in my attempts to generate a tech queue order beyond that produced automatically by beelines. Your example bulbing orders imply that selecting a custom tech-build order is possible (e.g. the chemistry - machinery combo which I haven't seen in any beelines) and you mention "control-click selection", but for the life of me I can't replicate this by any control-click combination I have tried! Have I misinterpreted the thread or am I still missing out on a basic and important interface tool after several hundred hours of CiV?