The professor hides white text on a white background to catch potential cheaters. The actual assignment is written in black text. If the student has followed the instructions that are written in white, this is a good indication that they may have cheated, because human eyes won't see the white text against a white background, while a computer program writing a paper for the student will see the white text and follow the additional instructions.
The professor hides white text on a white background to catch potential cheaters. The actual assignment is written in black text. If the student has followed the instructions that are written in white, this is a good indication that they may have cheated, because human eyes won't see the white text against a white background, while a computer program writing a paper for the student will see the white text and follow the additional instructions.