* when creating a big float, there are two different constructors. The biggest difference I could see what the default precision for each:
	* `new(big.Float)` has a default precision of 0
	* `big.NewFloat` has a default precision of 53
* this gets interesting when setting a either of these to a large number:
	*  `new(big.Float)` seems to dynamically change the default precision to whatever is needed
        ```
        b := new(big.Float)
        b.SetUint64(16629421200200000000)
        //yields
        <*big.Float | 0xc0003ece10>: {
          prec: 64,
          mode: 0,
          acc: 0,
          form: 1,
          neg: false,
          mant: [16629421200200000000],
          exp: 64,
        }

   * `big.NewFloat` doesn’t seem to change the precision (unless done so explicitly)
     ```
     b := big.NewFloat(0.0)
     b.SetUint64(16629421200200000000)
     // yields
     <*big.Float | 0xc0003ece40>: {
          prec: 53,
          mode: 0,
          acc: -1,
          form: 1,
          neg: false,
          mant: [16629421200199999488],
          exp: 64,
      }
     ```
        * the `acc` (accuracy) attribute is -1, which represents `Below`
		* the `mant` attribute (the mantissa) is the value of the this float, which is less than the expected value
		* if we set the precision to 64 before calling `SetUint64` then we get the correct value
		```
		b := big.NewFloat(0.0)
		b.SetPrec(64)
		b.SetUint64(16629421200200000000)
		// yields
		<*big.Float | 0xc000354090>: {
          prec: 64,
          mode: 0,
          acc: 0,
          form: 1,
          neg: false,
          mant: [16629421200200000000],
          exp: 64,
       }
      ```