I guess most of them are smarter than 5th grader if not by much, but definitely not all, at least 2 of them are dumber than you would possibly imagine. Here is the proof. See the screen capture below.
The label says "shop by top 4 deals" on the up-left corner, while there are 5 items in the list on the right. See the highlighted section in the screen capture.
Then you would ask why this has to be a carefully coordinated work from at least 2 engineers. Here is the deal. You need one dumb developer to invent this "4 equals 5" nonsense first, then you need another even dumber quality assurance engineer to give a green check before it meets public eye.
Anyone wants to join eBay, please make a note of this. You see, next time you talk to eBay recruiter, bring this article with you, and confidently tell them you are more than good enough to replace these two dumb ass.
Seriously Disclaimer: I am not referring specific to any eBay engineers, if you think you might be one of two dumb ass showcased here, you have the right to remain silent, or reveal yourself by commenting here. Or even better, link this article to your LinkedIn profile.