Hi! I had a question about writing blind characters
I've noticed in some media that blind characters there have the "ability" to tell when someone is lying or saying the truth. For example, i've seen this happen with Toph in ATLA and Diana Fragoso in the mexican movie "Perras"
And i was wondering what your thoughts are about it and if this trope can be considered offensive or not
Blind People With the Ability to Tell Who is Lying
In Avatar: The Last Airbender, Toph is able to tell who is lying based on their increase in heart-rate. This relies on the assumptions that 1) people’s hearts always beat faster when they lie and 2) that what caused the heart to beat faster is in fact the lie, as opposed to something else. Toph, given her powers, is sensitive to small changes, but she is not infalible either.
This is why Toph cannot tell Azula is lying. Azula’s heart rate is steady.
You may also be able to get into body language, shifts in stance or posture, or other physical traits that Toph can notice.
This relies on either superior hearing or sensitivity to vibrations. A blind character will need these if they don’t have other abilities like mind-reading.
When it comes to this type of ability, I want to mention that I have often felt frustrated that blind characters often have powers that either replace their sight or are otherwise not very physical in nature. We get a lot of superior hearing as opposed to, for example, flight or super strength. Therefore, it is nice to have a blind character with a power that is more physical in nature, in the case of Toph, and is used for other things outside of seeing. Telling if people are lying is creative way to use Toph’s ability that falls outside of using it to see. Not that it is actually replacing Toph’s sight the way powers do for many characters, which, to me, gives extra points in her favor.
I don’t think it would be offensive unless the blind character was somehow seen as morally superior or something because of their ability to detect lies. I also believe that portraying this as a power regular blind people have would be in poor taste. This should be a superpower a blind person has, rather than something the character can do because they are blind. Portraying blind characters with other types of powers that are not related to senses would be helpful.
And in case it wasn’t clear, I don’t think superhearing is a good superpower for a blind person.














