So I came up with an idea of three scenarios for each prediction. There are now three years and under each one, in small font, there is an explanation why. I divided them into three categories:
Technology Prediction - ''By 2025, we see paper thin smarphones.''
Catastrophy Prediction - ''By 2070, temperatures have risen by 4C''
Other Prediction - ''By 2020, Bronies are more numerous than trekkies''
Now, I will explain what scenarios can occur:
NEUTRAL - Exactly what it looks like now, but there is a small explanation why under the date.
OBSOLETE - In case of Technology, a better one could be invented and render the predicted one useless, in case of Catastrophy, it may be averted completely. Different from Optimistic catastrophy which occurs, but is delayed. In case of Other, it means that such event will not happen, for example, an Asteroid that was to pass near Earth is destroyed.
PESSIMISTIC - In case of Technology, it will happen later. In case of Catastrophy, it will happen sooner. NEVER USED in Other predictions (Which can only be Neutral or Obsolete).
OPTIMISTIC - In case of Technology, it happens sooner. In case of Catastrophy, it isn't averted, but happens much later. NEVER USED in Other predictions.
Here you have a ''how it will work'' pic: