That depends entirely on the nature and structure of the tax cut.
For example, in another oldie but goodie: We know that people with low incomes spend almost everything they earn, while people with high incomes save about half:
Thus, tax cuts for low earners will generate quite a bit of economic activity, as it will all get spent very quickly. In contrast, a tax break for the top 5% or top 1% will do almost nothing for the economy, as it will almost certainly go into savings.
Or: As part of the 2009 stimulus, Obama signed in a small cut to payroll taxes -- small enough that people didn't notice it. However, they did spend it, and it was probably more effective at getting people to spend than the Bush 43 tax rebate. The concept was similar ("send people money, get them to spend it") but when it arrived in a single check, people were more likely to save part of it, or pay down debts, than to generate new economic activity.
And of course, we also have to acknowledge that given our current tax rates, cutting taxes will NOT produce so much additional growth that it will offset the lost revenues. That is screamingly obvious, over and over again, most recently in Kansas and Louisiana.
lol
1) No one wants a command economy anymore.
2) In case you missed it, the Republicans now want to command American companies to manufacture in the US -- or else. It's hard to see how that is not an example of "economic activity without government direction."