Best professor you could ever have at UCLA. He is the GOAT. professor Jukka really devote almost all of his time to his students. He explain almost every problem from the homework so you probably will receive full score for the hw. He has very thorough study guide for every tests (eg, he even marks the page number of his lecture slides that you need to know for the exam). He is very very approachable and very helpful professor. You will wish to take him again because I do.