Complete Variable List Questions p. 145

[mp1224]

Hi,

When solving complete variable list questions, why do we first check for rule violations and then look at Not Laws, as opposed to first looking at the answers that contain Not Laws and then checking to see if the remaining answers contain variables that violate any of the rules? Wouldn't eliminating the answers that contain Not Laws first be more efficient?

Could someone please explain this to me?

Thanks in advance!

[Dave Killoran]

Hi MP,

Thanks for the question! It's because of confusion and duplication that we do it that way. If you check just the rules, then you know for sure you will have each individual rule covered, which eliminates any confusion or uncertainty. If you check Not Laws, then most people go back t the rules, which then often causes them to recheck one or more of the rules that lead to Not Laws. that can be confusing and time-wasting. Plus, of course, there will be games without Not Laws to check, so you'd go to the rules anyway.

Either starting point can work, but in my work with students I saw fewer errors and a generally faster, more confident outcome when starting with the rules.

Please let me know if that helps. Thanks!

[mp1224]

Hi Dave,

Your explanation definitely helped! Thank you!!