"If you meet Marx on the road, kill Marx."

[TBF]

3. What is different?

Each generation seems to think they have these complex new problems, and although conditions may have changed somewhat, what is really different? The very rich are robbing us blind. That statement applies now, as it applied 100 years ago, 200 years ago, 300 years ago, etc ... That's why the theory still applies. How we organize might be different, we may have different tools, but I fail to see "new problems". Just my two cents.