Dear God in Heaven! I don't know how teachers have the patience to teach in the ****** classes. How come you're the only one to fail to understand that there are a huge range of choices when it comes to methods? I tried to equate it to eating, which I'm fairly convinced you're familiar with. I'll try to re-word it for easier consumption (did you see what i did there?

).
Now let's replace the word 'method' with food.
You and I eat the same foods. Let's use examples such as pizza, pies & chips. Understand this bit?
Now that you've understood that bit (I sincerely hope), let's move on the the next bit ....
You & I only select foods we like from all that are available. e.g. I'm sure you must like some fruit or veg. I don't. I also suspect you might baulk at the prospect of haggis or tripe, for example. So you see, although we eat the same foods (from all those available), there are some that you don't eat, some I don't eat, & some neither of us eat.
Now go through the same process, replacing 'food' with 'methods', & replacing us with the IRA & Mandela. Do you get it now?
If you don't get it this time, I'm giving up. What's that phrase that Glory uses? Oh yes, you can't educate pork. Now I know what he was getting at.