The fact that we can become accustomed to anything, however disgusting at first, makes it necessary to examine carefully everything we have become accustomed to.
John F.Kennedy gave probably the greatest inauguration speech ever that first time, but I guarantee you when he first walked out there he was thinking, "Goodness gracious this is big and I better be up to the task."
An illustrational form tells you through the intelligence immediately what the form is about, whereas a non-illustrational form works first upon sensation and then slowly leaks back into the fact.
I suppose it is a bit of a date that we're having at the moment. As is usually the case you don't get married on a first date, you've got to go out a few times before you make any big decisions.