Hi Expert,

I still have not got a response on this question -
What's the difference between for + Verb-ing and to + Verb. In theory, yes, I know for + Verb-ing talks about function and to + Verb talks about intention/ purpose but the difference between these two meanings are fuzzy in these two following examples:

1. Warning that computers in the United States are not secure, the National Academy of Sciences has urged the nation to revamp computer security procedures, institute new emergency response teams, and create a special nongovernment organization to take charge of computer security planning.
=> It could easily be the case that they created an NGO and that NGO has the function of taking charge of computer security planning. Another way to say this is: "and create a special NGO designed to take charge of computer security planning." I don't see anything wrong with that "function" meaning. Why should I choose the purpose meaning over the function meaning in this sentence?

2. Responding to the public???s fascination with???and sometimes undue alarm over???possible threats from asteroids, astronomers have developed a scale for rating the likelihood that a particular asteroid or comet will collide with Earth.
Similarly, the function of this scale is for rating, which makes sense. However, I can also understand that they design this scale with the purpose of rating the likelihood. They don't design the scale randomly for fun, they have a purpose in mind, which is to rate the likelihood.

Therefore, at this point after doing these two sentences, I still don't know which is which. Please help, any Expert? GMATNinja?
Thanks!