Natural Method and others Theories !

There are many theories about second language adquistion , nevertheless every one have a different point of view about second language adquistion.We`ve got Monitor theory,Universal Grammar,Imput theory,and other but here we are going to talk about Natural method.We`ve got spoken about this topic,we know which are mains ideas about it and how we can us it . Developement it is so hard , is a hard process as we know developemenet a theory and practice it can be interesting.
We know some theories, si we can compare them . For example Universal grammar with Natiral method, both have a differente point of view , so we can to take a thing of every one and so we can developenement a new method.Is important to say that we have got critic every theory because may be we aren`t degree with that.