When demonstrating the 4x4 Incidence Matrix at 5:30

Example had: 1 2 3 4 A 2 0 0 0 B 2 5 2 0 C 0 0 2 1 D 0 5 0 1 Shouldn't it be: b/c of Directions 1 2 3 4 A 2 0 0 0 B 0 5 2 0 C 0 0 2 1 D 0 5 0 0

When demonstrating the 4x4 Incidence Matrix at 5:30

Example had: 1 2 3 4 A 2 0 0 0 B 2 5 2 0 C 0 0 2 1 D 0 5 0 1 Shouldn't it be: b/c of Directions 1 2 3 4 A 2 0 0 0 B 0 5 2 0 C 0 0 2 1 D 0 5 0 0

Great catch Omni!

It looks like I ignored the directions on the graph when drawing out the incidence matrix.

Taking directionality into account, the correct matrix would be:

```
1 2 3 4
A 2 0 0 0
B 0 5 2 0
C 0 0 2 1
D 0 5 0 0
```

Note that edges 2 and 3 are non-directed, so you can traverse them in both directions.

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