
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
If $f(x)$ is a decreasing function on $\mathbb{R}$, and $f(0)=3$, $f(3)=-1$, let $P=\{x \mid |f(x+t)-1|<2\}$, $Q=\{x \mid f(x)<-1\}$. If "x belongs to P" is a sufficient but not necessary condition for "x belongs to Q", then the range of values for the real number $t$ is.

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