Activity for alexqwx
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
Are portals possible? In a video game series called Portal, we are given a gun, which shoots two portals: an orange one and a blue one. These portals have the following properties: Anything that goes into the orange portal comes out of the blue portal (instantaneously), and vice versa. Only two portals may be fired at ... (more) |
— | almost 10 years ago |