Of course a trained agent is better than an untrained agent. 

All these things sound horrendous to the untrained eye, but 20 years experience in SF has taught me that the harder they make it to build and rent out units, the higher the prices are.

I always see what looks like good deals to me but I know the untrained eye can sometimes see a bad deal as a good deal. 

He also said that the going hourly rate for an entry-level untrained factory worker in Northern Nevada was $30!

A 'fully trained' pet I'd be worried about is a dog, since when they are untrained they have the potential to use the bathroom all over the house.

It may look dull to the untrained eyes, but to the investors who are willing to put in the efforts, millions could be made right here at home.

To my untrained eye, everything looks okay except the $172.50 remove all trash (seems high) and paint all walls trim and doors $1,380. 

Rehabs can easily blow out to double your original estimate, especially if you are looking with a somewhat un trained eye.On top of that your $35k profit for having $500k tied up for potentially 4 + months is kind of anemic, if the above happens (rehab estimate doubles) there goes all your profit.

Also, a lot of them are lazy couch potatoes, so unless they are young, wild and untrained, they do no more damage than other dogs.

A fire extinguisher can be dangerous, especially in the hands of untrained users, and there's no guarantee even proper use of one will be effective.