Hello drehb, thank you very much for your response.
as i understand your answer right, this means that when somebody starts a blockchain using PARSEC consensus instead of proof of work consensus then the user (node) must fulfill a condition to participate in the mechanism. For example to hold always an amount of coins (if its a cryptocurrency). In Cryptocurrencies the term is called Masternode or like you call them “Elder”. So there are 2 different classes of users (nodes) in a PARSEC network, although all users can publish transactions but only elders are involved in the consensus mechanism.
In this medium publication from maidsafe it says
“Therefore, PARSEC has been designed not requiring controllers, trusted nodes or any such centralised components, provided that the focus is permissionless networks, Free of charge.”
but are not the elders a kind of trusted nodes and is not the investment to become an elder a fee or a permission to participate in the mechanism ? please correct if i am wrong.