# Why using a blockchain is a bad idea for your business

# What having a blockchain implies?

- storage costs : everyone maintaining the ledger needs to store every transaction
- bandwith costs : everyone has to broadcast every transaction
- computational costs : every node has to validate the blockchain
- control : the creator does not control the blockchain, everyone collectively controls it
- developpement costs : developping on a blockchain is way harder than on a traditionnal database

# What to ask a business when they tell you that they are using a blockchain?

When a business is telling you about their innovative technology leveraging the power of the blockchain this should immedialty spake some questions :

- What is the consensus algorithm?
- who is responsible for validating the consensus rules?
- what is the nature of the participation ?
- is it open to access?
- is it open to innovation?
- is it a public ledger?
- is it transparent?
- does it improves acountability?
- is it cross borders?
- how is it validated?

### Find an error or bug? Have a suggestion?

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