These links will help my writing, thank you.

I remember the first criticizing against specialization that I found, came from some primitivist authors. But one has not necessarily to be a primitivist to understand the disadvantages of this lifestyle, where we know only a small area of the human activity, and don't know how to sustain our own lives by the raw materials of nature.

I have this constant fantasy that someday I'll learn every basic skill about gardening, farming, bio-construction and such things. But I am still in the survival mood, with no time or resources to pursue that self-development.

Yes, in Venezuela there is mail service, though it's in very bad conditions (as every service here, more if public).

Well I think that corporations and governments will inevitably try to control the crypto economy, but the technology behind it allows us much freedom, even more if the blockchain is based on privacy.