Can we set sticky-bit (a+t) or change the permissions of the files and directories under /proc especially /proc/<pid>?

The files or directories (/proc/<pid>) in /proc are not real files. The files/directories are dynamically created and destroyed by the kernel. The contents or the files changes dynamically as processes starts or stops. The sticky bit is not relevant in this context as it's not about controlling file deletion but rather provi...