Computers encourage thoughtless practices, risking dumbing down. There is no evidence of positive effects of computers on learning. It causes teachers to spend time on computer problems not lessons. Computer use dilutes language development. Computers don't allow the use of all the senses.
Computers decrease creativity.
Computers make students less committed and lazy thinkers. CAN DO 13. Students are distracted by screen images. The mediated world is less significant than the real one. Computer skills become dated.