<p>If by "slack" we mean that part of the quantity used from an input does not result in an increase in output, then it is evident that this is an inefficient mix of inputs. It is not even about re-allocating inputs to reduce/minimize costs, we are clearly totally wasting some input quantity.</p>

CC BY-SA 4.0
2018-06-30T20:54:15.703Z
2018-07-01T02:08:07.260Z
2018-07-01T02:08:07.260Z
Alecos Papadopoulos
<p>On the diagram below it is stated that A' has input slacks as it could reduce the amount of $x_2$ and still be on the frontier (by moving to C). However I recall mix-inefficiency having a similar definition. Is there any difference between slacks and mix-inefficiency?</p>

<p><a href="https://i.sstatic.net/95zMe.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/95zMe.png" alt="enter image description here"></a></p>

CC BY-SA 4.0
2018-07-03T23:52:14.377Z
Mix-inefficiency may include cases of slack, but may include other situations too
Henry
<pareto-efficiency><productivity><nonparametrics>
Are slacks the same as mix-inefficiency?
Joseph
# Are slacks the same as mix-inefficiency?

(Asked by: username_0 on 2018-06-29)

On the diagram below it is stated that A' has input slacks as it could reduce the amount of $x\_2$ and still be on the frontier (by moving to C). However I recall mix-inefficiency having a similar definition. Is there any difference between slacks and mix-inefficiency?

[![enter image description here](https://i.sstatic.net/95zMe.png)](https://i.sstatic.net/95zMe.png)

**Tags:** pareto-efficiency, productivity, nonparametrics
> **Comments:**
> **username_1**: Mix-inefficiency may include cases of slack, but may include other situations too  

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## 1 answers

### Answer by username_2 on 2018-06-30. Score: 1 | Accepted answer

If by "slack" we mean that part of the quantity used from an input does not result in an increase in output, then it is evident that this is an inefficient mix of inputs. It is not even about re-allocating inputs to reduce/minimize costs, we are clearly totally wasting some input quantity.


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