This presentation aims to show people that they already know how to deal with concurrency. It argues that if we have the tools for large scale concurrency (mashups) and small scale (hardware) that midrange (normal apps) can be done in a similar way, using existing tools. This is done by showing useful systems that have been produced in this manner using existing tools. ie from existing practice, not theory During the actual presentation I also talked about Kamaelia projects created by novice programmers of varying ability which show high levels of concurrency. These include: previewing PVR content on mobiles, multicast island joining, as-live streaming using bit torrent, Open GL based user interfaces & integration, seaside style webserving, speex based secure phone, IRC/IM systems, a shakespeare script player, and games tools. Other systems created include Atom/RSS routing, memcached integration, P2P whiteboarding (with audio + mixing), gesture recognition, presentation tools, a kids development environment, topology visualisation tools, database modelling etc.