if a tree falls in a forest ...

[diwana]

Re: if a tree falls in a forest …

@TLK

There are phenomenon of physics that only happen when you make an observation or they stay in hybrid stage. Tree falling and making sound may not be one of them but that does not mean that observation cannot create the act itself.

Sorry I just read this.

I differ. Part of my answer lies in above post.

For physical phenomenon, observation is not necessary.

Define hybrid stage. Sound merely is vibration energy in air or in any medium like water. It would exist (and slowly will dissipate) regardless it is 'observed or not.

Observation does not create physical phenomenon.

Physical phenomenon do not need observation. But not all observable phenomen are physical.

Physical phenomenon ‘can be’ observed/measured.

@Muzna

I agree with you…I think.
No instrument to measure sound waves means no sound is made.

But let me ask you this…is there ever an instance in the sub-atomic world when an electron jumps into orbit from a hybrid state even when an observation is not made? If yes, then has that electron actually jumped into orbit since no observation was made?

No true.

Physical phenomenon are present regarless they are observed or measured.

Heat/temperature exists, regardless you measure it with a thermometer or not.

A rock will still be ‘heavy’ regardless it is weighed or not.

Ocean makes sound regarless it is heard or not.

etc. etc.

Your electron question makes sense. (pun intended )