You're both right, it just depends on what is meant by "we". If it means humanity, then socialism has existed and it is better. If it means the country the speaker is from then it varies, and usually capitalism would have been a great advancement socially over precapitalist systems (whether that be primitive accumulation of capital through slavery in the Americas or feudalism in many other places).
You're both right, it just depends on what is meant by "we". If it means humanity, then socialism has existed and it is better. If it means the country the speaker is from then it varies, and usually capitalism would have been a great advancement socially over precapitalist systems (whether that be primitive accumulation of capital through slavery in the Americas or feudalism in many other places).