Today, a friend who works in the traditional Internet field announced his opinion after knowing that I bought Bitcoin and some altcoins:

1. He thinks this is a casino. Only those who open the casino and the lucky ones can make money. Don't indulge in gambling and don't be blinded by the deviation of survivors;

2. He believes that the fault tolerance of the blockchain is too poor and the efficiency is too low;

3. He pointed out that the public chain cannot be upgraded, otherwise the consensus will be torn and various forks;

4. He believes that giants represented by Facebook can apply blockchain in the financial field, but this has nothing to do with ordinary people's speculation, and it has nothing to do with the public chain;

5. He believes that Bitcoin is essentially a religion, so it's okay to be bullish, but it's nonsense to talk about blockchain killer applications.

I think what he said is right and a bit wrong, I don't want to say anything more.
Most people in the traditional field will only say that this is a liar, a pyramid scheme. This is not what the first friend told me, but so what?

Weakness does not hinder a person's survival, arrogance does. Weakness is not the end, but a state that can be changed.

Time will prove everything.

Put away your arrogance.