ive never fully understood the concept. so you connect the cable to the laptop, and then loop the other end around the desk or chair or what not? If they want the laptop, break the table leg, and un-hoop the cable-lock. Hell, steal the entire table.
...and then they draw the collective attention of everyone in the coffee shop, library, etc.
Its a strawman argument. No, the lock doesn't provide 100% security from theft. Trusting your laptop to a wire lock in an open, but fairly isolated area is a dumb idea. But it is an effective deterrent in a number of public settings, including those I mentioned above. IOW, locations with a number of other people around, many of whom would certainly take notice of someone smashing a chair, table leg, etc.