Table 7: Research
Task	Difficulty	Time needed
Repair a watch, radio, electronic circuit or mechanical part	4	4-12 turns
Build a small electronic or mechanical item from available parts	4	12-48 turns
Build a small electronic or mechanical item from scratch	4	100-650 turns
Repair a jet engine	5	12-96 turns
Build a MacGuffin	special*	special**
Repair minor TARDIS fault	8	12-48 turns
Rebuild TARDIS circuit	8	12-96 turns
Repair TARDIS chameleon circuit	10	a lifetime
Analyse virus or poison	6	48-200 turns
Analyse alien virus	8	48-200 turns
Move 1 tonne of rock	6	12-24 turns
Set explosive charge	6	1-8 turns
* The difficulty of building a MacGuffin depends on its power. One to induce fear in Cybermen, operating at Determination 6, would be Difficulty 6 plus a general modifier of 2 because it attacks a specific immunity.
** MacGuffins are prepared for the right moment. The time taken is until 1-12 research turns before they are needed.
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