Dont ever think bitcoin is ponzi because its very slightly different to ponzi. I think people who said bitcoin is ponzi need to learn more about bitcoin and generally cryptocurrency. I hope this statement not push people to have opinion about bitcoin is ponzi because it can make cryptocurreny down.
This statement is very typical thinking error. The idea of cryptocurrency and blockchaining is not relevant, when discussing, if bitcoin is a scheme. Think about mining these "coins". Everybody can mine, but only lucky ones will get awarded. Does it sound like decent monetary system in its core? Its a scam. Maybe wasnt planned as one, but when the dream grew too big, people started to make use of it.