Logical: If - Then
Another common pattern: All has a reason, exaggerated: Someone should be found as guilty for happening this or that. We stay calm and say: If - then.
If it is raining or snowing and I open my umbrella and the umbrella has no hole then I will not become wettened. You may construct contraries and combine them and look for correctness - it is a nice playground.
And by the way we learn about the combination of conditions and results - about and, or, not and learn to write them with capitals when we give them a 'logical' meaning: AND, OR, NOT
Two other examples:
- IF you talk OR she speaks, THEN I hear you.
- IF you talk OR she speaks, THEN I understand you - but NOT when you both are speaking.
This is an either - or. we will meet it in the future several times - and in a variety of disguise! Its official name: EXCLUSIVE OR (XOR)
move on