
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given the function $f(x)=e^{ax}-ax-1$.  
$(1)$ Discuss the monotonicity of the function $f(x)$;  
$(2)$ Let $m$ be an integer, and for any positive integer $n(n\geqslant 2)$, if $(n!)^{ \frac {2}{n(n-1)}} < m$ always holds, find the minimum value of $m$.

Present the answer in LaTex format: \boxed{Your answer}
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