Just for example.
The Smart TV even without the "Smarts" are generally higher end TVs.
Though not indicated on the main screen the $299 option is actually a SmartTV if you click through. You have to get down to the $269 option to get to non-smart TV.
The difference between the $269 and $299 seems to be about the difference for putting a processor in a TV and making it smart....
(Note I don't make the claim that the SmartTVs are cheaper but for the most part its being absorbed in the cost of higher end devices so you get the Smarts "for free" on better sets)
The cheapest 50" TV they have is $799 has interactivity. http://www.lg.com/us/tvs
An assumption is reasonable if it follows logically from facts we know about the world to some conclusion. For example, cars with more features usually cost more than cars with fewer. A washing machine with a detergent dispenser and 11 different wash modes costs more than one with 3 modes and no dispenser. A thermostat that just sets the temperature and does nothing else will almost always be cheaper than one with wifi connectivity and a companion iOS app.
Based on that knowledge, its reasonable to assume that a TV with more features will cost more than one with fewer. This assumption is wrong of course, but it wasn't unreasonable.
So that means an assumption is unreasonable if there's no reason you'd make it in the first place.
