hello I had read the blog 3 Strategies For Late-Arriving Data .But I can't understand repeatable queries. What is repeatable queries?

From my understanding - queries that expect the same result no matter how many times you run them. For example - number of orders from yesterday. you should be able to get the same result, unless you have a late arriving data. A great blog post from @Ariel Shaqed (Scolnicov). Please correct me if I didn't capture it right.

Thank you !