Civilization suffers easily from too much of a good thing. But too much of a good thing, you see, can lead us to a confusion between symbols and what they represent. But after what looked like a remake of the movie "Cocoon", can golf still pretend it’s a "real" sport? A few weeks from his 60th birthday, and after this cruel twist of fate, Tom Watson is still not done with his champion dreams. The underlying locking mechanism is still mechanical and may be subject to mechanical bypass. Indeed, security system software may well be considerably worse, since it is often purpose-written and may be subject to only limited scrutiny and testing. Inexpensive and low-power embedded micro-controllers are increasingly serving as the foundation of modern security and access control systems. India, they are commonly used for door locks and padlocks as well. For example, Medeco locks use special wedge-shaped bottom pins that are rotated into one of several possible positions by the key cuts (which can be cut at different angles).

Master ring cylinders (which are no longer in common commercial production but were once marketed by Corbin) use this mechanism to provide independently-keyed master keying. The commercial lever lock mechanism dates back to the early 19th century Chubb lock (and, indeed, to well before). SFIC cylinders (such as those made by Best), used in large institutional lock systems, employ a similar mechanism to provide two kinds of keys: regular keys that operate the lock and control keys that unlock and remove the cylinder core itself. Each wafer has a large rectangular cutout through its middle and through which the key passes; the precise height of the cutout keys the wafer to different bittings. Making keys for these locks often requires the use of special equipment and unusual, proprietary key blanks. Most automotive locks use wafer tumblers. Tubular cylinders typically have four to eight pin tumblers arranged in a circular pattern around the circumference of the plug.

The usual scheme for master keying involves using more than one cut in some or all pin stacks (this is accomplished by adding additional pin segments). In a lock with six pin stacks with a uniform chance of a pin setting at either shear line, the probability of a picked lock actually opening is only 1/64. Picking techniques for these locks involve the use of special torque tools designed to put torque on only one of the two concentric plugs. Picking locks very much involves "psychomotor" skill. The typical combination lock design involves a set of (usually three or four) disk tumblers around a spindle connected to the external dial. Picking these locks involves putting torque on the locking bolt and raising the gates to the correct height. More than anything else success in picking depends on experience and practice with a range of locks. Over time, accumulate a varied collection of practice locks, and study different lock designs whenever you get the opportunity. These locks are no more or less inherently secure than standard pin tumbler locks, although the external exposure of their pins makes picking them (and designing sophisticated picking tools for them) somewhat simpler.

Garrett 1997: 92, 94) Similarly, David Owen holds that Hume’s Problem of induction is not an argument against the reasonableness of inductive inference, but, "Rather Hume is arguing that reason cannot explain how we come to have beliefs in the unobserved on the basis of past experience." (Owen 1999: 6) We see that there are a variety of interpretations of Hume’s Problem of induction and, as we will see below, how we interpret the Problem will inform how we interpret his ultimate causal position. While it has financial interests in a wide variety of fields including boating and recreational equipment, bowling is what it has been most closely associated with for many in the general population. Clatterbaugh takes an even stronger position than Blackburn, positing that for Hume to talk of efficacious secret powers would be literally to talk nonsense, and would force us to disregard Hume’s own epistemic framework, what is billiards (Clatterbaugh 1999: 204) while Ott similarly argues that the inability to give content to causal terms means Hume cannot meaningfully affirm or deny causation. While many of the principles of pin tumbler lock picking apply or can be adapted to other mechanical lock designs, a complete discussion of these locks and techniques for defeating them is beyond the scope of this document.