[@Raineh Daze]

Im not a fan of someone saying 'your wrong' in a rather rude manner after I just wanted to stop this entirely so...

Shall we drop the entire sequential timeline then?

[hider=the timeline of the world, as put by the fate wiki]
The time period beginning with the genesis of the Earth until the beginning of the Common Era around 0 AD is referred to as the Age of Gods , during which the world followed laws based not on physics but on Mystery. This period is marked by a greater proliferation of Phantasmal Species and greater interaction between gods and mortals. This is the age of heroes and mythology, when rules of mankind and the laws of the world were different right down to the very fundamental physics of reality itself, but this period ended many years ago. Even Magecraft itself is described as being closer to Magic in this era and FSN Caster's abilities reinforce this concept. The currently-revealed Second Age of Gods eventually transitioned into the Age of Man due to three major events.
[hr]
First event: 
[i]Originally, gods existed in physical form as manifestations of nature itself, and ruled the Earth and its civilizations. The Deterioration began with the invasion of Sefar in 12,000 BC. After Sefar destroyed the majority of the Earth and a massive number of gods, she was finally beaten back by a Holy Sword forged in the core of the planet; however, due to the damage done by Sefar, the influence and power of the gods declined whereas those of humanity grew. The gods slowly began to lose their physical forms and eventually could only walk on the Earth by possessing compatible humans.[/i]
[hr]
Second Event:

[i]Realizing that if the weakening of the gods were to continue the Age of Gods itself would end, the gods of Mesopotamia created Gilgamesh around 2,600 BC as the keystone to connect the gods and humans. However, Gilgamesh unexpectedly rebelled against the gods and encouraged the complete separation of the gods and the humans. Due to this, the decline of the gods was accelerated and the gods lost their powers and became Divine Spirits, forced to exist in a higher dimension only able to observe the Earth without directly interfering. Later, the demise of Solomon the King of Magic accelerated the decline of Mystery.[/i]
[hr]
Third Event:
A trigger occuring at around 700 BC 
[hr]
Age of man: Begins a 0AD 
Around 0 AD, the Age of Gods ended entirely and the population of humanity grew explosively. Because the Earth obeys the law of the most prosperous species on its surface, the rules of the world were completely changed from one that obeyed Mystery to one that obeyed physics. The Phantasmal Species ceded the Earth's surface to humans and moved to the Reverse Side of the World, where Mystery still thrives.

The current age is identified as the Age of Man, where Mysteries such as magecraft are [b]dwindling[/b] in favor of science. The Five Magics were born in this age.


[/hider]
[hider=a mystery spoiler]
Finally, This is what the wiki states on Mystery. 
[i]a sliver of power of many different types that comes from the Root. It is the source of all supernatural phenomena such as Magecraft or ESP, and beings such as True Ancestors, Dead Apostles, Servants, Spiritual Bodies, as well as Phantasmal Species show signs of Mystery Mystery accumulates over time and grows stronger with age.[/i]

Mystery is on the decline in the age of man, Allow me to bring up another example of mysteries decline with the character of Gray and the item that is the lance Rhongomyniad

[i]The ability to use it has been passed down in a line descended from the relatives of King Arthur, and it is currently held by Gray. Her Mystic Code "Add" only existed as a temporary seal to stop the degradation of the weapon's Mystery in the first place.[/i]

According to your logic the lance should only get stronger. But its actually degrading over time. This is what the age of man does to mystery. The Lance can't retain its power anymore, so a seal has to exist to prevent the degradation. That is a pretty sorry state for the worlds mystery.
[/hider]

TLDR: Fate has so many writers it contradicts itself.