← L² Lab
📐 Logic
Card 08
🚗 ⛽ 🏁

"The car has a full tank of gas. Therefore, the engine will start."
Which Assumption is Necessary?

💭 How to Think About This

To find a Necessary Assumption, use the Negation Test. Flip each answer to "False." If the argument explodes, that was the necessary part.

Run the Negation Test:

🤔 Which thinking lens(es) did you use?

Select all the lenses you used:

👨‍👩‍👧 For Parents & Teachers

🌱 Everyday Logic

Kid: "I studied, so I will get an A!"
Parent: "What are you assuming?"
Kid: "That I'm smart?" (Not necessary)
Parent: "Try negating: 'I will NOT misread the instructions.' If you misread them, do you still get an A?"
Kid: "Oh no... I guess reading instructions is Necessary."