Update index.md - I believe this is incorrrect

[tomasholub]

I really like your article(s). But I need to correct this: HTTP is mainly synchronous. For a typical request you synchronously receive an answer. I am aware of special cases (XmlHttpRequest can be async) but they are not typical...

[rwieruch]

Hm, I get it. Thanks for clarifying! How do I express that the communication isn't delayed though? I always thought I can say something is "async" whenever the response is delayed and I can do something else within this timeframe.