Assistive Technology

[Doreste, Rachel]

Good Afternoon,
 
                I have a question, based on the w3c validator we found errors 
but then the page was accessible by JAWS (an assistive Technology).  What 
disabilities are effected that make the errors given by the validator? Meaning, 
what is effected by the errors since JAWS didn’t detect any errors? Thank you 
for your help!
-Rachel Doreste