shebang

(If you don't feel like reading so much text I've bolded my actual question at the end of this thread) (btw. Sorry for the - probably - weird gramatical context sometimes, Dutch is my mother language, English isn't) Hi all, I'm new here in this forum & the title of my issue is just a small part...

if linux systems will not consider anything after # sign in the scirpt, then how come #!/bin/bash works?? #!/bin/bash starts with # sign it shouldn't be consider right??but if the #!/bin/bash is not included in the scirpt its not working??? explain me pls......