All of the schools I'm applying either recommend but don't require recommendations, or only require 1 recommendation (they're also all for the part-time program). Does anyone think that it's really ok to send just one? I'm wondering if it's an unwritten rule to send more (like 'optional' essays). I have one good recommendation already, but I'm wondering if I should ask another professor for one. The only reason I'm hesitating is that since I'm currently getting my Masters in Electrical Engineering, the vast majority of my professors have horrible English and writing skills, so I'm thinking that additional LoRs would be sort of 'blah.'