There are different types of handedness, with approximately 10% of the population being left-handed. While left-handed individuals face challenges due to living in a right-handed world, such as difficulties with writing and using tools, left-handedness can provide advantages in areas like sports, creativity, and adaptability. However, in some cultures left-handedness was seen negatively and children were subjected to reeducation attempts to change their handedness, which could result in long-term mental and physical issues.