Just makes you wonder why stupid Satoshi bothered with introducing the concept of mining into the system.
I mean, according to the rules above, the participant in the Bitcoin system might just as well do their job without any mining involved.
Miners are participants in the Bitcoin system.
Acording to Satoshi, mining (proof-of-work) is a method of establishing a distributed timestamp server. The purpose of mining is to determine the order in which the majority of participants agree transactions were received. The miner (as a participant in the system) defines, guards, and adheres to the same consensus rules for himself that all the rest of the participants (both miners, and non-miners) also define, guard, and adhere to.
Satoshi Whitepaper:
3. Timestamp Server
The solution we propose begins with a timestamp server . . .
4. Proof-of-Work
To implement a distributed timestamp server on a peer-to-peer basis, we will need to use a proof-of-work system similar to Adam Back's Hashcash . . .