A coincidence? Perhaps. But intriguing.

Today morning I was thinking about nondestructive testing in the context of civil airliners. I thought, it's important to nondestructively test each aircraft before it's delivered to its customer. That was about it. I forgot about it for the next few hours.

A few hours back, I conducted some queries related to ETS, GRE, GMAC and GMAT, and hit upon an interesting-looking article.

To my surprise, the Google-served ad below the article read Non-Destructive Testing, and linked to a company providing nondestructive testing systems.

How's it possible? I clearly remember that at least in the last 1 year, I haven't conducted any query related to nondestructive testing.