downloading and executing code on the fly as in the web browser its a broken design problem.. browsers are being patched for a long time now.. to fit into sop

downloading and executing code on the fly as in the web browser its a broken design problem.. browsers are being patched for a long time now.. to fit into sophisticated models.. it came all over here, by using duct tape.. but now it can be patched anymore to get into the next level.. it cant reach the next level because its broken by design. how long until people face the reality?