I believe he did #3 wrong on the video because under the answer tab it is different.

an example of this happening would have been great!

This is a great explanation.

An example of a real LSAT question should be inserted in this lesson.

So, if I am just skimming through the stimulus to find the conclusion, and have been getting all of the questions right, does that mean it is okay for me to skim through the stimulus or am I careless?