Section 15 Rules for joining maps: what counts as “the same” variable?

We already saw that we will very often have different fragments of information which share common variables, which we can join up to create more comprehensive maps. In the previous section we looked at four different ways to snap together causal maps. They basically all say “yes, of course you can join together maps on their common variables”. However this does open up the question, critical for people doing actual coding, of what counts as a common variable.

We also need to deal with different possible formulations of variable names using what you could call different parts of speech like “more investment” / “amount of investment” / “investment increased 10%” / “investment will increase 10%”.

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