Yikes, I haven't heard this before. Has anyone done the math behind this? is it 100% certain? I will do the math myself if not.

The problem with getting into mining is that your returns over time are the inverse of this function:
https://blockchain.info/charts/hash-rate

Buying and holding BTC has proven to be easier and more lucrative for me.

I generally agree with this. However, I've heard concern that Bitcoin may be too slow for in-person purchases.

The counter-argument is usually that credit cards allow charge-backs for at least up to 30 days. It may be that the current credit card system only works because merchants trust that credit card companies will reasonably protect them from fraud. I'm not 100% convinced one way or the other, any insight?

Hi All,

First time poster here! I've recently been thinking about the intrinsic challenges that Bitcoin may have at a protocol level if it ever became the dominant currency for some society. Some often quoted problems are:

- deflationary
- slow transaction times
- environmental impacts of growth in mining
- 1Mb fixed block size

Are there any other problems that are less obvious?

Cheers!
- Daiso