<s>I</s> We did the experiment. (Early results indicate that dipping may win, though the final conclusion is uncertain.)


 - $H_2O$ ice bath  
 - canning jar  
 - thermometer 
 - pot of boiling water
 - stop watch

There were four trials, each lasting 10 minutes.  Boiling water was poured into the canning jar, and the spoon was taken from the ice bath and placed into the jar.  A temperature reading was taken once a minute.  After each trial the water was poured back into the boiling pot and the spoon was placed back into the ice bath.

![equipment][1]

----------------------------------------
     Method:                  Final Temp.
     1. No Spoon              151 F 
     2. Spoon in, no motion   149 F
     3. Spoon stirring        147 F
     4. Spoon dipping         143 F

Temperature readings have an uncertainty of $\pm1\,^o$F. 

   ![chart][2]


     Red   line:  no Spoon
     Green line:  Spoon in, no motion
     Aqua  line:  Stirring
     Blue  line:  Dipping


------------

$$\begin{array}{|c|cl|cl|cl|cl|} 
\hline
\text{Min} & \text{No Spoon} & & \text{Spoon} & & \text{Stirring} & & \text{Dipping} \\ \hline
 & \text{°F} & \text{°C} & \text{°F} & \text{°C} & \text{°F} & \text{°C} & \text{°F} & \text{°C} \\ \hline
1' & 180 & 82.22 & 175 & 79.44 & 175 & 79.44 & 177 & 80.56 \\
2' & 174 & 78.89 & 172 & 77.78 & 171 & 77.22 & 173 & 78.33 \\
3' & 171 & 77.22 & 168 & 75.56 & 167 & 75 & 168 & 75.56 \\
4' & 168 & 75.56 & 165 & 73.89 & 164 & 73.33 & 164 & 73.33 \\
5' & 164 & 73.33 & 162 & 72.22 & 161 & 71.67 & 160 & 71.11 \\
6' & 161 & 71.67 & 160 & 71.11 & 158 & 70 & 156 & 68.89 \\
7' & 158 & 70 & 156 & 68.89 & 155 & 68.33 & 152 & 66.67 \\
8' & 155 & 68.33 & 153 & 67.22 & 152 & 66.67 & 149 & 65 \\
9' & 153 & 67.22 & 151 & 66.11 & 150 & 65.56 & 146 & 63.33 \\
10' & 151 & 66.11 & 149 & 65 & 147 & 63.89 & 143 & 61.67 \\ \hline
\end{array}$$


  [1]: https://i.sstatic.net/zPIDz.jpg
  [2]: https://i.sstatic.net/65MiU.png