Focusing on vocabulary development will help students to construct viable arguments and critique the reasoning of others. (sadlier.com)
And fourth, we want to help students learn to give viable arguments and to critique the reasoning of others, the third Standard for Mathematical Practice in the Common Core State Standards. (lsalliance.org)
About the only viable argument you could throw at the Harry Potter series is «if you've seen one, you've seen them all.» (dvdizzy.com)