Size of the universe

Those are geological scales, not cosmological.They are also categorically wrong.There are 4 eons/10 eras, not 6 eras. You are mixing them up.Ceno, mezo, paleo belong to the Phanerozoic eon.

Yeah, that system was called "memorization."

That chart is in error.You have eras and eons mixed up and are only giving half the picture.geochronological eras are enumerated at 10, not six.

no. According to the ICS, which you already acknowledged as an authority, there is a clear distinction that eras are a subcategory of eons.It should also be noted that the eoarchean era lasted 300 million years, which is nearly as long as the Phanerozoic eon (540 million years, indicated by your own provided graphic) so these divisions are not based on time or "billions of years v millions of years."You have no grasp of this subject which is made obvious by your defining geochronological time using a biostratigraphical definition, which is a different, albeit related, subject.Lastly, numerology is not a scientific topic. Please don't change the facts to suit your new wave agenda. We all know better.

Nope. What you are doing is making disproven assertions that there are 6 eras, when there are not.