That is true. This implies that new tools can be divided into two categories; those that use the same skills as the old tools but have a multiplicative effect on the results for all users (spoons->spades), and those that bring even an untrained user up to a certain basic level of competancy but make little or no difference to an expert user.

...having said that, I now realise that there is a third category of tool as well; that which can be used to great effect by an expert but is next to useless to a completely untrained user. An example of this sort of tool would be a bicycle; someone who knows how to ride a bicycle can use it to travel at great speed, while someone who does not know how to use it is likely to simply fall off.