I need to know more about difference between ABC and TBAC.

Activity$-$based costing $($ABC$)$ is often thought of quite complex and difficult to implement. A further innovation has been the development of Time Driven ABC $($TABC$),$ that is supposed to be a superior method, estimates costs more accurately, as well as easier to implement.

$1-$ What are the principal differences between ABC and TBC$?$

$2-$ What does Activity based allocation system "buy" with its additional complexity over labor or machine hour$-$based allocation system?

$3-$ How is TABC different from the labor$-$based allocation system?

$4-$ Time Driven Activity Based Costing $($TABC$)$ System has been proposed as a simpler version of activity$-$based cost system. Usually simplicity $($in implementation as claimed$)$ comes at a cost. Does TABC make any sacrifice from the principles of ABC that has the potential to make it less accurate?

I need to hear different opinion and consolidate with my answer.