Brad: Global scope can lead to surprises and we don't want surprises in code. Brad: One of the areas where this comes back where I think maybe things might have been different if the people were able to see the future 30 years in advance, would be the global interpreter lock itself with its global description right there. This portion of Talkpythonomy is brought to you by Brilliant.org. You're a curious person who loves to learn about technology. Sign up for a seven day free trial that's talkbython.fm slash brilliant at brilliant.org.