[collabs]

> Communication is a tax that you should justify before paying it.

I thought it meant like keep things as local as possible. Like within the same process, within the same machine, avoid going through the network because staying on the processor is always the fastest, going to ram is next fastest, and if you need to communicate across the network it is always slowest

[alternatex]

I don't think performance advice should be part of a general architectural principles list, so I don't think that's what they meant. Otherwise might as well add "avoid nested loops", etc, and then it devolves into a general programming advice list.

Performance is and always was something dependent on the domain rules. You don't start architecting for performance before understanding requirements so why make it a pillar of all architecture.