Do I need to disconnect functions that I write in the original :Connect()?

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#1

Basically, imagine you have this:

tool.Activated:Connect(function()
 --some code
)

Do you have to disconnect this function? And if you do will it be able to run again?

#2

You normally don’t need to disconnect unless you specificly want to disconnect at given arguments, and you can always connect to the function again using :Connect()