I found Node.js a much simpler platform to use, mainly because there is no worrying about concurrency. Because of the asynchronicity of Node, don't you explici

I found Node.js a much simpler platform to use, mainly because there is no worrying about concurrency. Because of the asynchronicity of Node, don't you explicitly have to worry about concurrency issues? I understand that with callbacks you can make things essentially linear from an execution standpoint (per connection), but I guess I'm a little confused by this statement.