We need a language to read a book, and that affects our thought process, as we start thinking like the author and behave in a manner we perceive from the books. Like how someone speaks under the influence of alcohol, books n authors too influence.
Sawdust that is created from cutting natural wood is safe for your compost no matter what kind of tree the wood comes from. Just make sure the wood has not been treated with any chemicals. Another option with sawdust is to try mixing it in with potting soil.
Sawdust mulch from oak trees works best if it has been aged or composted for at least a year to reduce the risk of nitrogen binding. It can also be mixed with oak chips or bark mulch to improve its water retention properties and offer a more varied rate of decay.