Ever see a student get scolded for not using a #2 pencil? Can't use a pen. Can't use a marker. Can't use a #9 pencil. Must be a a #2 pencil.
Ever fill out a government form that must be done in non erasable black or blue ink. A pencil is unacceptable. A red pen, green pen, purple pen is unacceptable. An erasable pen is also unacceptable.
Not saying users should have to know what a .JPG from an .HEIC but just saying there is plenty of precedent of technical requirements for things in real life. I've had forms rejected at the immigration office for using the wrong type of pen an I've been in classes where students didn't have the correct type of pencil and caused issues.
Ever fill out a government form that must be done in non erasable black or blue ink. A pencil is unacceptable. A red pen, green pen, purple pen is unacceptable. An erasable pen is also unacceptable.
Not saying users should have to know what a .JPG from an .HEIC but just saying there is plenty of precedent of technical requirements for things in real life. I've had forms rejected at the immigration office for using the wrong type of pen an I've been in classes where students didn't have the correct type of pencil and caused issues.