If something is a fluid... or at least a liquid... that means it... flows, right?
Flow speed isn't infinite, so whenever you pull apart a liquid, you'll see some remnant of the pre-flow state. The thicker the liquid, the slower you need to pull it apart to see that.
Is this surprising? Why wouldn't every liquid do this? In what way is this somehow special to some liquids and not others?
That is: how do you even know if someone (a) is doing the same job as a graduate of your program would do, (b) actually skipped a program or its equivalent, and (c) is making more than a graduate of your program?
All of these are personal and private information. If I apply to a startup tomorrow and get hired without listing my engineering degree on my resume, then are they supposed to add me to some national database of uneducated engineers, list my compensation, and explain that they would've hired a graduate for the same role too? If I apply to another company and list my degree then is that gonna overwrite the database? How the heck would this actually work?
But then again I suppose if you lead a cosseted life, never played with the contents of a shed, and had your first practical experience of actual hands on behaviour of viscous liquids in a lab… you might shout “Eureka”.