I'm simply curious about your intelligent guess on the TV and hotel room's age. How did you arrive at the year 2006 and the 15 years?

I started by remembering the year of that fateful day (attack on the World Trade Center) which was in 2001. I have a broken television which is a FLAT SCREEN TV (I tried hard to remember the year that I bought that broken TV, but I failed). When I failed to remember the exact year when I bought my TV I just tried to estimate the year when I bought it, I arrived at the year 2009 then I estimated the year of release of the TV on your photo, I counted backward since my TV is a newer model than that of the TV on your photo, by counting backward I arrived at the year of 2006. We are now at the year 2021, I subtracted 2006 from 2021 and the product is 15 years.