Butterflies Are to be Seen, Not Touched, Lest You Permanently Damage Them

To you, yesterday
I have nothing to say.
The butterfly effect is real, haven’t you heard?
Noun: “(in chaos theory) the phenomenon whereby a minute localized change in a complex system can have large effects elsewhere”
You know?
So I have nothing to say to you,
Yesterday,
As I fear of a change too great
To ever be realized. To ever be Not-Realized.
If I did, though-
If and only if-
I’d say to keep going.
Yesterday was once today
Was once tomorrow.