Reality: Testing is very important. Only well trained software engineer can do it.
Myth: I can learn more by being a programmer!
Reality: Tester must also write programs. Tester must at least write the drivers and stubs so that testing can be done.
Myth: We must wait until programming is done, before testing can begin.
Reality: That will be too late. Non-execution-based testing can begin even before programs are written. Unit testing can proceed before other units are written.