And you can combine those categories to gain or lose a lot of money.For example, I have seen tons of small 10-20 key motels in rural areas for sale that are just obsolete and should probably be bull-dozed.

Like, will this property become obsolete and more difficult to rent in the future?  

We buy, refurbish and sell, giving to the community back open spaces that we’re obsolete.

What we got in the end was a functionally obsolete floor plan, with un-level floors and $300K finishes. 

Not much experience with pension and don't plan on researching much because I know they are becoming obsolete, however 25 years in 1 company does not sound like a good ROI since you are so young. 

However I think we are hitting a point where the college degree is just about obsolete.

I wonder if even 1% of realtors would have told her this could happen since she was willing to market the property herself (Fsbo, facebook, craigslist, etc).Lots of you here talk like realtors are angels sent from heaven but I see them being obsolete in the future.

My job is becoming obsolete.

I assume you mean a 1911 in .45 ACP. 45 Long Colt is an obsolete round.

There are many large old buildings in my area (schools, Libraries, churches) that are functionally obsolete.