Determining the truth by consensus means that all the nodes of computer network must agree on whether something is true or not, in order to verify the transaction and added it to the ledger. Main advantage of this is decentralization, meaning there is not one person, or one place that decides what is stored in database, but the agreement is reached thru consensus thanks to incentives given to nodes.
Central database is centralized system, it is stored in one place and trust is placed in database admins to keep the integrity of data intact.
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- What does it mean when we say that in blockchain, consensus determine the truth?
Consensus provides the determination that a truth is a truth is a truth and nothing can change that. With a consensus, a verification or acceptance of a transaction is accepted by the entire network and it is the absolute truth.
- How is this different from how truth is determined in a central database?
A truth in the database is only true to the given time and the final result but there isn’t a way to verify if it is indeed truely come to that by means of valid transactions. It is quite possible that someone with nefavirous intentions can get into a DB and change something and while the database tells something as true, it is true from “data” but may be not so from the validity of what is being seen.
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1: Each node on the blockchain has to agree to integrate the information on the network.
2: A centralized database needs the trust of every party that contributes to the ledger of activities and transactions.
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We don’t need to trust in any entity, because every block inserted has the consensus of all nodes. If all nodes agree with means that the transaction is real.
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In a centralized database the truth is determined by the entity that holds the database. The actions of insert and delete data are managed by the entity.
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I think consensus determines the truth in blockchain because all transactions are able to be verified.
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The biggest difference is because on the blockchain, all transactions are present and cant be removed. While bank transactions could be manipulated and by those in high positions.
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Consensus determines the truth because all nodes verify the transaction and will arrive at the same conclusion of whether to include that transaction in the block chain or not.
The nodes do not need to trust each other, all they need to do is verify the truthfulness or not-truthfulness only. It is therefore Trustless system for truth determination. -
In central database, truth is based on the belief that this central database has been updating data consistenly following the protocols/programs which it was designed to be usedand Is additionally protected from external manipulation and intervention to circumvent the protocol.
In Essence therefore, it is based on Trust.
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1 What does it mean when we say that in blockchain, consensus determine the truth?
In blockchain, all nodes need to agree on what is true or not true through. To keep the integrity of the consensus, it is achieved through incentives.
2 How is this different from how truth is determined in a central database?
The truth determined in a central database is through government and authority. We are entrusting in an authority that what they’re saying is truth where in a decentralised system the truth is validated so it’s trustless.
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What does it mean when we say that in blockchain, consensus determine the truth?
In blockchain the majority of all paticipants (51%) in proof of work or stake have confirm every transaction. So the truth is foundet by the majority of the opinions of the participants. -
How is this different from how truth is determined in a central database?
In a central database only one participant tells what is truth and mostly nobody can check that reality.
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100% of participants must be in consensus or it might result in a fork. 
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What does it mean when we say that in blockchain, consensus determines the truth?
We don’t rely upon a singular party to verify a transaction. It is verified by multiple computers on the network each with its own copy of the blockchain. -
How is this different from how truth is determined in a central database?
In a centralized system, the central authority is the only one to verify and keep the ledger.
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- What does it mean when we say that in blockchain, consensus determines the truth?
All validators must agree to approve a transaction. - How is this different from how truth is determined in a central database?
Central database is only ONE record and can be altered or changed where blockchain must agree between all validators.
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- Consensus determines the truth through an incentivized process in which all ledgers verifies whether a transaction is fraudulent or not. Therefore the truth is determined as incentives and variable ledgers/incentivized actors confirm transaction as true.
- The truth cannot be directly determined from a centralized database. There is not incentive for outside factors to prove or disprove such transactions. Such transactions are also not being verified by others as the database is centralized and managed by one party.
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Consensus determines the truth in the blockchain by creating provenance amongst all companies within the supply network to verify that each company is selling exactlyyyyyyyyy what they are claiming to be selling.
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Central database gives the authority to determine truth of transactions to one central authority that can be corrupt compared to the consensus need by the decentralized network of the nodes in a blockchain to verify truth of transaction.
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He should have done their tutorial. His use of the tool is way better than the guy they used.
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As transactions require validation from different nodes, then they all should have the same ledger where they can determine the truth. Also, they all getting paid for validating transactions. So this is why consensus determine the truth.
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Because in a central database you have to trust in the one who provides that information, and everything depends on what that central database says. In blockchain, validators with a public ledger make information transparent and is trustless.
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to me consensus means the block chain is a money making party where you get rewarded to play by the rules
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- Blockchain, consensus determines the truth by removing trust and replacing it with mathematically proven verifiaction build on incentives.
- Central database truth is based on traditional audit/ internal and external controls/samples while consensus enforces anyone to play by the rules.
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- To obtain consensus, the majority of nodes examining the transaction must agree that it is correct. It is therefore, extremely difficult to cheat.
- A centralized database is a single authority of mutable data.
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Consensus is a community agreement or network agreement.
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Central databases usually have a central authority making the rules.
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If “consensus determines the truth”, then it is obviously the truth, if only one tries to cheat, one answer will come different and the whole transaction will be screwed. Therefore cheating becomes useless.
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If the truth is determined by a central database, that truth has been typed in by one individual or one entity, and can be changed anytime depending on one’s interest.
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