In the video, The “response.render” Method, you have @ 3 min into the video you have res.render ('post', {post: post});

Hi, I also thought this was very confusing. And logically, I don't think this line of code would be considered a best practice either due to its triple use of the word.

Others, please correct me if I am wrong, but I believe that the first 'post' in res.render('post', {post: post}); is telling the app to render the post.jade in the response. It's doing this thanks to these two lines of code:

app.set('view engine', 'jade');
app.set('views', __dirname + '/templates');

The second 'post' in res.render('post', {post: post}); is declaring a property inside of the object which is being provided as the second parameter in the response.render method.

The third 'post' in res.render('post', {post: post}); is the value of this object. This third 'post' refers to the var post = posts[title];

How does the app know which one is which? Because res.render's first argument is always the view (which has been defined in the two lines of code above) so it looks for a view and not a variable. And res.render knows that the second 'post' is a property of an object because it comes after a '{'. It knows that the third post is a variable because it is not a string nor a number nor a boolean value, so it goes to look for that variable. For more on res.render please see the following: http://expressjs.com/en/api.html#res.render If you have any more questions, please ask :-)