Individuals not knowing the minutae of a blockchain protocol does not mean that what you say about it is true.
The hash value I believe you are talking about is used in the block headers. They contain the hash of the previous block in the chain.
The critical thing to remember is that choosing a nonce value that along with the transaction information generates a small enough hash value to be accepted is difficult while verifying that the hash is correct is trivially easy.
Individuals not knowing the minutae of a blockchain protocol does not mean that what you say about it is true.
The hash value I believe you are talking about is used in the block headers. They contain the hash of the previous block in the chain.
The critical thing to remember is that choosing a nonce value that along with the transaction information generates a small enough hash value to be accepted is difficult while verifying that the hash is correct is trivially easy.