On Point: 5. Daubert

Now that Wisconsin follows Daubert, perhaps you can challenge the cell tower tracking evidence the State plans to present in your case as “junk science.”  Click here for an ABA Journal story about how to do it.  According to defense expert Michael Cherry:  “No one who understands the relevant science would ever claim that data from a single cell tower can reliably be used to specify the location of a caller at the time a particular call is made.”  Click here for the decision and order denying the admission of cell tower tracking evidence in U.S.

Caselaw prior to amendments to §§ 907.01-.03 may be found: here. These sections were amended by 2011 Wis Act 2 (eff. date 2/1/11), as follows:

907.01 Opinion testimony by lay witnesses. (intro.) If the witness is not testifying as an expert, the witness’s testimony in the form of opinions or inferences is limited to those opinions or inferences which are rationally all of the following:

(1) Rationally based on the perception of the witness and helpful.