I wrote a pretty detailed analysis about this problem here in case you're interested: https://mindbowling.wordpress.com/2020/09/14/two-envelope-paradox/ https:

I wrote a pretty detailed analysis about this problem here in case you're interested: https://mindbowling.wordpress.com/2020/09/14/two-envelope-paradox/ https://mindbowling.wordpress.com/2020/09/14/two-envelope-pa... It all depends on how the envelopes are prepared.