The first part of a typical chain
Something important here is that the Wiki has picked an arbitrary starting point for the loop - all five of the major production economies provide at least
something that all of the other four need (though for a few of the links just a single commodity)
One could equally correctly say
- the first part of a typical chain is an Agricultural system, to provide food and supplies for the other economies
- this then feeds an Industrial system, which provides machinery both for the Agricultural and for more sophisticated manufacturing in High-Tech
- the High-Tech and Industrial economies then allow mining to take place at Extraction systems, which provide raw materials for Refineries, and some metals for Industrial and High-Tech
- metals and other materials from the Refineries then boost the production of the Industrial systems
and conclude that you should start by building up Agricultural production
It'd need some very careful experimentation to separate out inter-economy production boosts from all the other things which could change production levels.
(The economy of pre-colonisation systems
is sufficiently abstracted that mixed economy systems do not gain production benefits over single-economy systems, but there are enough observable differences already that it may not work in exactly the same way here)
So wisdom about security needed. My system has a medium security level but I have a compromised nav beacon. Anybody know how to 'uncompromise' it?
I don't think there are any CNBs in High Security systems, so pushing the security level up further might change it.
That said, exactly what causes CNBs at all is unclear - they're most common in Low Security (but many Low Sec don't have them) and less common in Medium (but many Med Sec do) - so it may also depend on other system properties, the faction in control, and so on.