Saying "it is probably the case that it is [100%] true " is pretty meaningless in computing terms unless you can enumerate what "probably" means in that sentence.

The "probably" in that example was enumerated in the previous part of the sentence that you failed to quote:

whereas "probably true [or 90% chance of being true]" means that "it is probably the case that it is [100%] true

The 90% gives the meaning that reasoning systems that use probabilisitic logic exploit. Whether you think it's meaningless or not though, the fact remains that fuzzy logic deals with degrees of truth, and probabilistic logic deals with probabilities of truth that do not admit of degrees. When a person talks about partial truth, they are appealing to the intuitions that fuzzy logic is founded upon, and when they talk about likely or unlikely truths, they are appealing to the intuitions that probabilistic logic is founded upon. There is no reason that they can't be combined (e.g., something is probably mostly true, which might in one particular case mean I think it's 85% likely (probabilistic logic) that it has truth value between 0.7 and 0.95 (fuzzy logic)), but they are distinct, and "probably" refers to probabilistic logic more than fuzzy logic, which was my original point.

28.8K MODEM! Waiting to load on a 28.8K MODEM, you say! Bloody hell, you had it easy. We would have loved to have the luxury of waiting, or even having a real modem.

When I was a kid, we had to get up at 1 o clock in the morning, run 7 miles into town and back for no reason at all, and then get down on all fours and push a big wheel around like donkeys all day in order to generate electricity to do our 'web surfing' in the evening. When I say 'web surfing', of course, I mean that our 1 bit per day telegraph receiver would deliver a single bit, yes or no, and if it was yes, our dad would whip us with a cat o' nine tails until we went unconscious, and if it was no, we would get no gruel for the day and have to work in the fields overnight instead of sleeping.

With apologies to to those who really had it hard...

It's just intended to make it a bit more difficult, in order to discourage people who would be willing to write a 4-line script that uses Curl but are too lazy to do much more.

When making the case to the boss that they do need to purchase the software and have licenses and proof, the best strategy is to appeal to his self-interest and his desire to cover his own ass.

Explain that if just one disgruntled former employee wants to take revenge against the company, (s)he can make an anonymous report to the BSA and that the fines can be extremely severe.

No sane manager will want to be potentially held responsible by his superiors for millions of dollars in fines and attorney's fees, based on what probably amounts to at most tens of thousands of dollars.