"I’m used to writing in dynamic programming languages, which definitely do not process 1GB files in 0.25 seconds. Fun!" 1GB in .25 seconds = 4GB in 1 second.

"I’m used to writing in dynamic programming languages, which definitely do not process 1GB files in 0.25 seconds. Fun!" 1GB in .25 seconds = 4GB in 1 second. Kind of a simplistic takeaway considering the article's title.