Mora is a computer program. How a computer would be able to accurately say yes or no to something is about as accurate as someone with one of those magic 8 balls. Like others to this thread have said.... Mora is for entertainment purposes only.
Mora is a cheap computer program who randomly generates "yes no maybe" answers. "she" is merely for entertainment perposes and is not "a sophistocated computer program which tries to analyze the future." "She" cannot anylyze data. For example, I asked her "Am I 15?" after typing in my real birth date and age on my profile (my age is private and none of your business)and it said yes which is not true.
Long before the age of computers there used to be a coin operated machine on fairgrounds.Put in a coin and the machine issued a small "card" that told your "fortune". Just like MORA, they were for entertainment only! But a surprising number of people actually believed those cards! Crazy!
The scope of fortune-telling is in principle identical with the practice of divination. The difference is that divination is the term used for predictions considered part of a religious ritual, invoking deities or spirits, while the term fortune-telling implies a less serious or formal setting, even one of popular culture, where belief in occult workings behind the prediction is less prominent than the concept of suggestion, spiritual or practical advisory or affirmation. Historically, fortune-telling grows out of folkloristic reception of Renaissance magic, specifically associated with gypsies
Well, Mora is just... a guide, because nothing is set in stone, everybody and anything can change the outcome of this and that, so if you ask Mora if the spell would work, she may answer yes, but unfortunately, the target noticed the malevolent spell and decide to do precautions to prevent it from working, thus what makes Mora's answer to be "No" if you asked the same question for the 2nd or so time.
And well, as other's said, it's for entertainment or think of it as a "coin toss" when you can't decide about something.