It can be challenging for people, including parents and close friends, to tell apart their own twin siblings from another person's identical twin siblings, especially if they are not intimately familiar with both sets of twins. Identical twins share nearly identical genetic makeup, which can result in very similar physical appearances, making it difficult to distinguish between them based solely on looks.
However, people who are close to the twins and spend a significant amount of time with them may start to notice subtle differences in their personalities, mannerisms, or other characteristics that can help them tell the twins apart. Over time, these unique traits become more apparent to those who are familiar with the twins.
It's worth noting that even for those who are close to the twins, mistakes can still happen, especially when the twins are not together or are in unfamiliar situations. Identical twins themselves might have certain tricks or cues they use to help others differentiate between them, such as wearing different accessories or adopting distinctive hairstyles.
In summary, while it can be challenging to tell apart identical twins, especially for those who are not intimately familiar with them, those who spend significant time with the twins and pay attention to their individual nuances are more likely to develop the ability to distinguish between them.