In Brazil we have this

 When you teach and don't explain that have all that and they are different you make something that we call confusion and have no college in Brazil that like people that appear are making art that make confusion, see that snippet create confusion he isn't helping you just are confusing you. You don't gonna learn even the basic of programming being confused all the time. Rute Bezerra de Menezes Gondim

Ps.: And the science isn't nock 3 times to have luck, the supertision have to be apart of the science or we gonna travel to the trash yard all the science that was supertision was truw in the trash.