[Yahya A.Sharif (OP)]

A massive human can stand  on weak toes

It is clear that toes are not weak.
Why do you nor realise this obvious fact?

.
They are. But I focus on how these toes or knees whether are weak or not bear a 60 k rock for minutes compared to bearing human body 60 kg " upper part" for years and the calculations 60+60 kg will not affect the huge difference 60 minutes vs 50 years.Or lets say holding a bag of 60 kg for a day vs walking on your knees for 50 years.
The idea is as I repeated many times is when a human knees bears its own body the body will be lighter than bearing  any other equivalent mass.

[Bored chemist]

I want to prove it by another argument.

You can not prove it, because it is obviously wrong.

In fact you are wrong twice.
This is wrong
"A massive human can stand  on weak toes"
because toes are obviously weak.
And this is wrong

when a human knees bears its own body the body will be lighter than bearing  any other equivalent mass.

because it is nonsense.
Either the mass is equivalent (i.e. the same) or it is not.

[Bored chemist]

The idea is as I repeated many times

Repeating a wrong idea will never make it right, so why are you doing it?

[Kryptid]

You do realize that your knees are under much greater stress when they have to hold up both a 60 kilogram rock and the rest of your body than they are when they only have to deal with your body, right?

[Yahya A.Sharif (OP)]

You do realize that your knees are under much greater stress when they have to hold up both a 60 kilogram rock and the rest of your body than they are when they only have to deal with your body, right?

Yes. I can do the calculations. lifting the upper part alone is 60 kg. lifting the total with the rock is 120 .By lifting a 120 kg I double the load, if the knees bear the rock for one day the knees ability to bear is doubled by 18250 times. It is like putting on stomach a 1 kg vs putting on your stomach 18.25 tons

[Bored chemist]

You do realize that your knees are under much greater stress when they have to hold up both a 60 kilogram rock and the rest of your body than they are when they only have to deal with your body, right?

Yes. I can do the calculations. lifting the upper part alone is 60 kg. lifting the total with the rock is 120 .By lifting a 120 kg I double the load, if the knees bear the rock for one day the knees ability to bear is doubled by 18250 times. It is like putting on stomach a 1 kg vs putting on your stomach 18.25 tons

You seem to have posted random numbers.

[Yahya A.Sharif (OP)]

You do realize that your knees are under much greater stress when they have to hold up both a 60 kilogram rock and the rest of your body than they are when they only have to deal with your body, right?

Yes. I can do the calculations. lifting the upper part alone is 60 kg. lifting the total with the rock is 120 .By lifting a 120 kg I double the load, if the knees bear the rock for one day the knees ability to bear is doubled by 18250 times. It is like putting on stomach a 1 kg vs putting on your stomach 18.25 tons

You seem to have posted random numbers.

When I put a 60 kg rock I double the load "120 kg " if the knees bear a rock and upper part "120 kg " for one day then by removing the rock the time my knees can bear must be double the one day or two days, however the time when removing  the rock for a human is more than two days which is 50 years or 18250 days which is a huge difference in numbers this means removing the rock of 60 kg is not just removing  half of the load but letting the body work on his knees in a different way.

[Bored chemist]

A shelf can hold up a rock for a minute or a year. It doesn't need to be stronger to hold it for longer.
Your ideas make no sense.

[Yahya A.Sharif (OP)]

A shelf can hold up a rock for a minute or a year. It doesn't need to be stronger to hold it for longer.
Your ideas make no sense.

Increasing in weight during age will cause knee disability
https://www.everydayhealth.com/knee-pain/why-knee-pain-worsens-with-age.aspx
But this still after 50 years or so, because it is still human body on its own knees. On the other hand this will happen shortly if carrying a load.
https://www.gomberamd.com/blog/how-does-lifting-weight-impact-your-joints-21917.html

[Origin]

Increasing in weight during age will cause knee disability
https://www.everydayhealth.com/knee-pain/why-knee-pain-worsens-with-age.aspx
But this still after 50 years or so, because it is still human body on its own knees. On the other hand this will happen shortly if carrying a load.
https://www.gomberamd.com/blog/how-does-lifting-weight-impact-your-joints-21917.html

This has nothing to do with your original conjecture, did you give up on that?

[Bored chemist]

A shelf can hold up a rock for a minute or a year. It doesn't need to be stronger to hold it for longer.
Your ideas make no sense.

Increasing in weight during age will cause knee disability
https://www.everydayhealth.com/knee-pain/why-knee-pain-worsens-with-age.aspx
But this still after 50 years or so, because it is still human body on its own knees. On the other hand this will happen shortly if carrying a load.
https://www.gomberamd.com/blog/how-does-lifting-weight-impact-your-joints-21917.html

Getting old means losing the ability to repair the damage done by tings like carrying heavy loads.
It has nothing to do with making the forces bigger or smaller.

[Yahya A.Sharif (OP)]

did you give up on that?

No. I'm right in all of these

[Yahya A.Sharif (OP)]

A shelf can hold up a rock for a minute or a year. It doesn't need to be stronger to hold it for longer.
Your ideas make no sense.

Increasing in weight during age will cause knee disability
https://www.everydayhealth.com/knee-pain/why-knee-pain-worsens-with-age.aspx
But this still after 50 years or so, because it is still human body on its own knees. On the other hand this will happen shortly if carrying a load.
https://www.gomberamd.com/blog/how-does-lifting-weight-impact-your-joints-21917.html

Getting old means losing the ability to repair the damage done by tings like carrying heavy loads.
It has nothing to do with making the forces bigger or smaller.

My original idea is that people lose their ability to walk at very longer age of something like 65 years. While when carrying a load of the same body mass it will damage the knee causing pain and of course if this continues even for a short period it will cause disability.
https://www.gomberamd.com/blog/how-does-lifting-weight-impact-your-joints-21917.html

[Bored chemist]

did you give up on that?

No. I'm right in all of these

No you are not.

I want to prove it by another argument.

You can not prove it, because it is obviously wrong.

In fact you are wrong twice.
This is wrong
"A massive human can stand  on weak toes"
because toes are obviously weak.
And this is wrong

when a human knees bears its own body the body will be lighter than bearing  any other equivalent mass.

because it is nonsense.
Either the mass is equivalent (i.e. the same) or it is not.

[Yahya A.Sharif (OP)]

I want to prove it by another argument.

You can not prove it, because it is obviously wrong.

In fact you are wrong twice.
This is wrong
"A massive human can stand  on weak toes"
because toes are obviously weak.
And this is wrong

when a human knees bears its own body the body will be lighter than bearing  any other equivalent mass.

because it is nonsense.
Either the mass is equivalent (i.e. the same) or it is not.

This is meaningless. You are just throwing random words.

[Bored chemist]

This is meaningless.

It means something to everyone else here.

[Yahya A.Sharif (OP)]

If my knees can bear massive 40 kg "my upper body" for years then the force  by my 40 kg upper part on my knees is small.
A smaller force by upper part of 40 kg on knees means I can overcome this force and lift the upper body by a small force, this is why jumping with massive 40  kg is effortless compared to even moving a rock with the same mass of 40 kg and this exactly what I said before.

[Origin]

If my knees can bear massive 40 kg "my upper body" for years then the force  by my 40 kg upper part on my knees is small.
A smaller force by upper part of 40 kg on knees means I can overcome this force and lift the upper body by a small force, this is why jumping with massive 40  kg is effortless compared to even moving a rock with the same mass of 40 kg and this exactly what I said before.

Seriously, you're going start this silliness again?

[Colin2B]

If my knees can bear massive 40 kg "my upper body" for years then the force  by my 40 kg upper part on my knees is small.
A smaller force by upper part of 40 kg on knees means I can overcome this force and lift the upper body by a small force, this is why jumping with massive 40  kg is effortless compared to even moving a rock with the same mass of 40 kg and this exactly what I said before.

You need to learn about and understand levers. Until you do this subject is locked.