Efficiency
There are many actions in Mush to which an efficiency is attached, given as a percentage. They can be classified into two categories:
- Progress actions, which are always successful, and are used for a greater task. The efficiency of all participants sums up, until 100% is reached and the task is complete.
- Random actions (repairing something, shooting someone, etc.), which may fail: the efficiency is the chance of success.
In both cases, the efficiency you get varies depending on many factors: the action itself, skills, items in inventory, broken equipment, etc.
Progress Actions
Main article: Relaying.
For several of such actions (Research, NERON Projects, PILGRED) the efficiency of any character drops after each progress, and is only reset to its base level when another character does the same action: relaying is thus needed.
Random Actions: Success Chance
In most cases, a failed random action will only generate a 
Private log but will, however, increase the efficiency by half or a quarter.
Note: Just watching the table, we see that bare hands actions repair fails have a have x1.5 multiplier efficiency variation, while repairing with tools fails makes this a x1.25.
If we consider that having two tools "apparently" boosts the base chance on x2.25 (basicx1.5x1.5) and as repairing with no tools increase more quickly the efficiency, it would be a good idea to start repairing hard items without tools (quick growth of base efficiency), and then pick tools to get the x2,25 boost just when the chance to repair with tools is more than a 20-25% repair without them.
However, any other action consuming 
will reset the efficiency to its base level. Including converting into 
. On the other hand, changing room when is available, lying down or eating do not consume and do not reset the efficiency.
The maximum efficiency is of 99%, meaning that a random action can always fail, even after 10 unlucky tries in a row.
TODO: anyone knows how to fill this table without testing each action?
| Action | Base chance (first try) |
Next tries | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | |||
| Repair | 3% | Confirm: do alien TV and BIOS have the lowest repair chance ingame?
| ||||||||
| 6% | 9% | 13% | 19% | 28% | 42% | 63% | 94% | 99% | ||
| 12% | 18% | 27% | 40% | 60% | 90% | 99% | ||||
| 25% | 37% | 55% | 77% | 99% | Confirm: 77% should be 82% by multipliers
| |||||
| Repair with 1 tool | 9% | 11% | 14% | 17% | 21% | 27% | 34% | 42% | (tested on research lab) Confirm: With multipliers, numbers should be: 9-...-21-26-32-40-60
| |
| 18% | 22% | 27% | 34% | 42% | 53% | 66% | 82% | 99% | Confirm: experimental numbers, test them
| |
| 37% | 46% | 57% | 71% | 89% | 99% | Confirm: experimental numbers, test them
| ||||
| Repair with 2 tools | 13% | 16% | 20% | 25% | 31% | 39% | 49% | 61% | 76% | Confirm: experimental numbers, test them
|
| 25% | 22% | 27% | 34% | 42% | 53% | 66% | 82% | 99% | Confirm: experimental numbers, test them
| |
| 56% | 70% | 87%? | 99% | (first two tested on fuel tank) Confirm: IMPORTANT, seems multipliers aren't based on base chance.
| ||||||
| Turret: shoot | 30% | 45% | 67% | 99% | (tested) | |||||
| AstroTerminal: scan | 80% | 99% | (tested) | |||||||
 Extinguisher: extinguish
|
50% | 62% | 77% | 96% | 99% | (tested) | ||||
