almost everyone around us today even in the world at large is fully sure that blockchain is here to change the world

Yh almost everyone excluding our wild leaders who seem to have no idea or have decided to turn a blind eye of how the blockchain can help us.

The discovery of blockchain came after the creation of Bitcoin by Satoshi Nakamoto

Yh we can say this because blockchain gained a lot of popularity after btc gained popularity.

Blockchain will increase business efficiency

Yes, this always tend to benefit business who want to grow their business world wide. While they can connect with clients worldwide , their clients too can make payment without having to worry about huge transaction fees.

they need to completely aboundon they system and switch over to blockchain technology

Abandoning your old legacy system for the blockchain is worth doing as they will not only experience rapid growth in business , they will also grow to love the blockchain.