Laser Maize Solution
Part 1
There are a few variants on how to place the prisms, but only one canonically correct one (that'll extract the right data later) If they're in a non-canonical state, it'll display a message like "the way is still blocked... these lasers look off:"
- Puzzle 1:

- Puzzle 2

- Puzzle 3

Reading the Semaphore letters for each of the three puzzles in rainbow order spells: POPCORNKERNELPANIC
Part 2
Each joke indicates some numbers/letters. Looking at just the indicated numbers/letters on the corn draws a letter. Pressing P lets you confirm the current page's letter.

| Corn-y Joke | Answer | Key |
|---|---|---|
| Why was 6 afraid of 7? | 7 8 9 (seven ate nine) | I |
| Two atoms are walking when one says i lost an electron. Are you sure? said the other atom. | I'm positive (+ numbers) | M |
| 2019 and 2020 got into a fight, which year won? | 20 21 (2020 won) | A |
| What do you call the numbers 3 and 7 on a date | The odd couple | L |
| What do you call a number that can't keep still? | A roamin' numeral (I V X L C D M) | L |
| What do you call a pet snake that's 3.14 feet long? | A pi-thon (pi) | E |
| What are two reasons you shouldn't drink from a toilet? | Number 1 and number 2 | A |
| There are nine cows in a field, which one is from the middle east? | Cow 8 (sounds like Kuwait) | R |
| Why didn't 4 go to the hip and happening party? | Because it was 2² | S |
Confirming each letter adds two words to a final joke to the last screen: "What did the farmer say when he heard about the quickly rising price of government corn subsidies?"
Solution
IMALLEARS