What is the purpose of image transcription bots?

Hi everyone at tech! I’m not sure whether this is the most appropriate place to ask but I’ve always wondered what the purpose of the image transcription bots are? I’ve always seen them in certain subreddits, particularly oldpeoplefacebook. I supposed that it was supposed to help people with reading difficulties or even colourblindness but wouldn’t you just be able to read the image. Sorry if I sound really dumb and inconsiderate. Thanks for any contributions and answers. ☺️

Submitted January 01, 2018 at 01:43PM by j_sorby http://ift.tt/2DIJdtJ via TikTokTikk