Firstly let me tell you (very abstractly), how I understood the consenous. If I am wrong, please correct me.
Out there are many miners and each one receive a lot of different transactions, that have to be validated. The one who is faster put all his by others verified transactions into a block.
What if for example my transaction lands by a miner, whose computing power very low is and he will be never able to put my transaction into a block?
Thanks abd best regards
Consensus in bitcoin network is not about validation of transactions. It is all about who is the winner among chains that could be produced in the course of mining. Satoshi said "Nodes always consider the longest chain to be the correct one and will keep working on extending it" (
https://bitcoin.org/bitcoin.pdf) - and that defines consensus among all honest nodes.