Blurred Alacrity is an illusory miss chance.Blurred Alacrity (Ex): At 2nd level, your understanding of the haste spell makes you difficult to target with melee and ranged attacks. While under the effect of a haste spell that you cast yourself, you gain concealment (20% miss chance). This miss chance increases by +10% at 3rd, 4th, and 5th level. The effect of this ability does not stack with blur, displacement, or similar spell effects.
Evasive Celerity is a blinking effect.Evasive Celerity (Ex): At 5th level, your knowledge of the haste spell makes you difficult to target with spells. While under the effect of a haste spell that you cast yourself, individually targeted spells have a 20% chance of failing against you. This spell failure chance increases by +10% at 6th, 7th, and 8th level. The effect of this ability does not stack with blink or similar spell effects.
Blurred Alacrity is an illusory miss chance.
Evasive Celerity is a blinking effect.
True Seeing sess right through Blurred Alacrity. It would see partially through Evasive Celerity, since it is like blinking. The miss chance from Blink is reduced from 50% to 20% by someone who can see invisible things. Since you start off with 20% Evasive Celerity... hm. Interesting. You could say concealment is reduced to 2/5th, I suppose?
Wikipedia said:"Argument from fallacy" describes what is also called Argument to Logic (Argumentum ad Logicam) or fallacy fallacy, is a logical fallacy which assumes that if an argument is fallacious its conclusion must be false.
It only works on blur or displacement (or blink) effects. These are not defined as effects, therefore, we can conclude that True Seeing doesn't do anything at all.You confer on the subject the ability to see all things as they actually are. The subject sees through normal and magical darkness, notices secret doors hidden by magic, sees the exact locations of creatures or objects under blur or displacement effects, sees invisible creatures or objects normally, sees through illusions, and sees the true form of polymorphed, changed, or transmuted things.
Now prepare to have your mind blown.
Evasive Alacrity and Blurred Celerity are not effects. They're class abilities.