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Last time then, we were looking at some ideas relating to async and await and Tasks. And we came up with five, not quite rules, but some statements that help us understand whats going on. And those were: you can only use await inside an async function; an async function must return void or Task or Task generic for T, or a Task-like type, or IAsyncEnumerable, or IAsyncEnumerator; we said an async function should contain at least one await; an async function should not return void; and async is not part of the function specification. And the bit we didnt look into last time - so if you havent seen the last video, do take a look at it, because that will fill in most of this. But it was that slight contradiction between statement two and statement four, where were saying an async function is allowed to return void, but were saying you should not, as good practice, return void. So what I want to do is look at why that is. So lets take a look at the progra