Here is a concise summary of the provided text:
**Title:** (Implicit) "Amazing Optical Illusions"
**Content Summary:**
* A video showcases a series of optical illusions, inviting viewers to participate and share their perceptions.
* **Featured Illusions:**
1. Speed-changing runner
2. Mirror-based people count
3. Hallway speed illusion
4. Color debate (shoe: teal/gray vs. pink/white; bag: white vs. blue)
5. Hidden/visible objects (animals, turtle, cigar)
6. Perception-altering images (moving/static image, gray bar turning blue)
7. Audio illusion (hearing "powerful" vs. "cheesy")
8. Mind-bending pattern changes (with blinking)
9. A final, 30-second illusion inducing drowsiness and altered perception (post-video effect: seeing movement on static objects)
**Call to Action:** Like, subscribe, and engage with the content by commenting on individual illusions.
Here are the key facts extracted from the text, each with a number and in short sentences, excluding opinions:
1. The video showcases various optical illusions.
2. A character's running speed appears to change when looking directly at it versus looking away.
3. A photo contains only 2 people, despite appearing to show more due to a mirror.
4. Covering the sides of a hallway video makes the hallway appear to pass slowly.
5. Covering the middle of the same video makes the hallway appear to pass quickly.
6. A shoe's color is perceived differently by various viewers (teal/gray vs. pink/white).
7. A photo contains 2 hidden animals: a crow and a cat.
8. Staring at the middle of a photo can make crooked lines appear straight.
9. A specific illusion makes pink dots appear to disappear and then reappear as green dots.
10. A bag's color is perceived differently by various viewers (white vs. blue).
11. Staring at one of three yellow dots can make the other two appear to disappear.
12. A set of bars can be perceived as either 3 or 4 in number, depending on the viewing angle.
13. A gray bar can appear to change to blue after staring at a black dot.
14. A photo of a girl and her horse can be perceived as moving in either direction.
15. An audio illusion prompts listeners to hear either "powerful" or "cheesy".
16. A static photo can create an illusion of movement.
17. A turtle is hidden in a provided picture.
18. A sentence contains 6 instances of the letter F.
19. Blinking rapidly at a pattern can make it appear to change.
20. 99% of people allegedly can't find a hidden cigar in a specific photo.
21. The hidden cigar is located in the wall of the photo.
22. A 30-second video clip is designed to create a visual effect after staring at the screen without blinking.