The waste of motion is one of the seven wastes attributed to Taiichi Ohno, the father of modern Lean. Motion is, simply put, moving more than necessary when doing work. It can be large motions, such as walking between work areas, or small motions, such as flipping a screwdriver over Read more…
Micromanagement is the act of giving overly excessive instructions to employees. It tends to reduce the effectiveness of an organization for a variety of reasons. If a manager is micromanaging an employee, he is not doing his own work, limiting his effectiveness. If a manager micromanages, her employees will be Read more…
The average or arithmetic mean (commonly just called the mean) is one of the most common measures of central tendency of a set of data. In layman’s terms, a measure of central tendency is simply a way of trying to describe the middle value of a set of data. The Read more…
Mistake proofing devices, also called poka yokes, are the most effective way to improve quality. In a nutshell, a product (or process) is designed in which a mistake is impossible to make. This problem prevention is targeted at specific errors. In order to mistake proof a process, one must have Read more…
Murphy’s law has been stated in various ways, but essential boils down to “If something can go wrong, it will.” There are many addendums to the law, such as “in the worst possible way” or “at the worst possible time”. The origin of Murphy’s law is somewhat murky but seems Read more…
Like many Japanese terms surrounding continuous improvement, there are several slight variations of translations of these three terms. In general, muda is the most commonly used of this group of terms. In practice, it has come to mean “waste”. Muda really means wasteful activity. Mura means the waste of inconsistency Read more…
Muri is a Japanese term for a specific form of waste. It means unreasonableness or overexertion. It is often referred to with two other Japanese terms. Muda is the traditional view of waste in which resources are used without adding to output. Mura is inconsistency or unevenness, usually as a Read more…
Mura is one of three Japanese terms meaning waste. The others are muda, the traditional form of waste in which resources are not effectively used, and muri, meaning overburden or overexertion. Mura means inconsistency or excess variation in either processes or demand. When processes can’t be standardized because of the Read more…
Machining time is the time when a machine is actually processing something. Generally, machining time is the term used when there is a removal of unwanted material. For example, in a drill press, machining time is when the cutting edge is moving forward and making a hole. This is known Read more…
Many Lean terms can trace their origins to Japan. Muda is one of those terms. It really translates to “wasteful activity”, but in common practice most people equate muda to waste. Since one of Lean’s main goals is reducing waste to improve flow, it is no surprise that muda has Read more…