A YouTube creator shares various mind tricks and optical illusions to test viewers' brain strength. The tricks include:
1. Math problems that lead to the answer "carrot".
2. A checkerboard illusion where two squares appear different but are actually the same color.
3. A word problem where the brain quickly skims through and misses certain words.
4. A visual test where viewers are asked to count the number of passes made by a team in white, while a "moonwalking bear" is present in the background.
5. A color perception test where two grays appear different but are the same color.
6. A sound test where a repeated audio clip sounds like it's getting higher in pitch.
7. A memorization test where viewers are asked to recall details from a picture.
8. A word problem where the answer is 10, despite some fish dying, because they are still in the tank.
The creator encourages viewers to try these tricks and share their experiences in the comments.
Here are the key facts extracted from the text:
1. The narrator presents several mind tricks and experiments to test the strength of the brain.
2. The narrator asks viewers to participate in a math problem: 1 + 1 - 2 + 2 = ?, and then asks for the name of a vegetable.
3. The narrator claims that the result of the math problem will influence the viewer's answer to the vegetable question.
4. The narrator shows a checkerboard with black and white pieces and asks viewers to identify the color of squares A and B.
5. The narrator reveals that squares A and B are actually the same color, despite appearing different.
6. The narrator presents a sentence with several words and asks viewers to count the number of words that start with the letter "F".
7. The narrator reveals that the correct count is 6, but notes that many viewers may have miscounted.
8. The narrator presents a video of a basketball game and asks viewers to count the number of passes made by the team in white.
9. The narrator reveals that the correct count is 13, but notes that many viewers may have been distracted by a "moonwalking bear" in the background.
10. The narrator presents a picture of a gray square and asks viewers to identify the color of the square.
11. The narrator reveals that the color of the square appears to change when viewed in a different context.
12. The narrator presents an audio clip with a repeating sound effect and asks viewers to identify the sound.
13. The narrator reveals that the sound appears to change pitch when viewed with a different video.
14. The narrator presents a picture with several objects and asks viewers to memorize the objects.
15. The narrator asks viewers to identify the number of kids in a playground scene.
16. The narrator asks viewers to identify the objects that are not present in the scene.
17. The narrator presents a math problem involving fish in a tank and asks viewers to solve it.
18. The narrator reveals that the correct answer is 10, despite some fish dying.