I'm looking for the name of the cognitive bias that is expressed in the following story.
A fellow coworker was instrumental in getting a 75 gallon fish tank installed in the lobby of the company that we work at a couple of weeks ago. The water needs to cycle for a while before fish can be introduced. The other day he was testing the water when someone walked by and asked when we would be getting fish. He said probably a week or so. The person was appalled that it would take so long to get fish.
The company had been without a fish tank for 20 years and now they've had one for a couple weeks and this person thought one or two more weeks was way too long to wait. What is the name of this bias?