[innocentoldguy]

I think "cannot do" is a misnomer. Shouldn't it be, "consciously designed not to do"?

Server-side state management offers several advantages over in-browser state management, such as:

• Better security and privacy.

• More reliability and control.

• Better and more predictable performance since it removes the burden from the client device.

• More accurate user metrics.

• Minimizes browser compatibility issues.

• Better scalability when prioritizing user data security.

• Easier debugging.

(Edited to fix bullet formatting.)

[lpil]

It does offer advantages, but also disadvantages. Lustre lets the programmer pick whichever technique is most suited to each component in their user interface.