No, you analogized directly the "observance" of dark matter with the observance of a flower.<quoted text>
No, I am not saying this happens with dark matter. I am saying that isn't the only way to observe something. Observation is done by measuring the effects something has on something else. We have observed dark matter through its effects on light.
Now you say it's different.
No, observation of an entity is NOT DONE when observing effects on something else.
That is, by definition, observing something else.
Then you postulate some source of the effect.
You did not observe it.
Nobody has observed dark matter.
When people in science use phrases like this, they are intentionally exaggerating the scope of their findings.
Or sometimes, as in your case, they actually believe what they are saying when it is a blatant untruth.