Lim Chew also draws attention to the practical value and lesson of the letter about the near illiterate mechanic showing 4 well educated people how to use the cigarette rolling tobacco box.

• 林洲也指出，一名几乎目不识丁的技工教导4位教育程度良好的人士如何卷烟盒，这封信显示了实践的重要性。