Are chineslingq# lessons in order?

Im just curious as to whether these lessons are in some kind of order?

If you view them in "full collection’ view it seems they are more or less but im not sure. I listened to 1-tony in vancover and then 3- 3 friends in beijing…easily enough and then i went to 25 or something and didnt understand it ie; i couldnt figure out what sentences meant even though i knew the words in it. Now i went back to lesson 2, which has more unknown words but i found easier…

There is not order to LingQ series of podcasts in any language.